Human reproductive human egg cell. Medical search. Frequent questions

Studies of early embryo development are carried out in bovine embryos, which closely resemble human embryos. (uni-goettingen.de)
The RGI researchers have figured out how to derive stem cells from a four-day old embryo-a stage known as a morula. (nationalgeographic.com)
But when the RGI team took a single cell from a morula, it still had the capacity to develop into a normal embryo. (nationalgeographic.com)
That means that parents who are doing IVF could conceivably agree to have a cell removed from their morula, which could then give rise to a line of stem cells, while the morula developed into an embryo ready for implanting. (nationalgeographic.com)
A gradient (red) in the concentration of the plant hormone auxin determines that only one of the eight nuclei in a plant's embryo sac will become an egg. (ucdavis.edu)
The plant triggers auxin synthesis at one end of the female reproductive unit called the embryo sac, creating an auxin gradient. (ucdavis.edu)
These divisions result in the creation of an oblong, cell-like structure called the embryo sac, which contains eight nuclei, three of which are clustered near the open end of the ovule. (ucdavis.edu)
In order to break the initial "egg shape" of the embryo, cells need to polarize in a precise and coordinated manner. (nature.com)
The embryo of the frog Xenopus laevis is widely used as a model of cell polarization, migration, and morphogenesis due to its unique experimental advantages. (nature.com)
A human female embryo develops around 7 million proto-eggs, known as primordial oocytes. (discovermagazine.com)
Which means, says Eli Y. Adashi, a professor of medical science at Brown University's Warren Alpert Medical School, that those eggs and sperm can then be fertilized to create an embryo-all in a lab. (futurity.org)
They then use those egg and sperm cells to fertilize the appropriate opposite gamete to give rise to an embryo that is then implanted in foster mothers, who then give birth to pups. (futurity.org)
The egg then "reprograms" the adult nucleus so that the cell behaves like an embryo but has the genes of the adult cell. (nih.gov)
When an embryo like this is implanted into a uterus, as with Dolly, the process is called reproductive cloning. (nih.gov)
In another strategy, called therapeutic cloning, the embryo can instead be used to create stem cells that are genetically identical to a patient. (nih.gov)
Since embryonic stem cells have the ability to form virtually any cell type in the body, those taken from a cloned embryo could potentially be used to treat many diseases. (nih.gov)
Blastocyst stage embryo: An embryo which has divided into hundreds of cells. (ivf1.com)
New FDA regulations will hurt egg and embryo donation Last update / published 05/13/2005 On May 25, 2005, new FDA guidelines for the donation of human cells, tissues, and cellular and tissue-based products (HCT/Ps), will go into effect. (ivf1.com)
There are enough for IVF, but way too few for the hundreds of thousands needed for the extensive trial and error process that will be required to prefect human SCNT, at least to develop the cloned embryo to the point where stem cells can be harvested and eventually, cloned embryos eventually gestated to birth. (cbc-network.org)
Hwang and colleagues report that the cells are chromosomally normal, self-renewing and "pluripotent" - meaning they have the ability to form the three major types of cells in the early embryo that give rise to all other cells in the body. (scienceblog.com)
IVF is a process of fertilization that includes eggs extraction and sperm cell sample retrieval to form an embryo. (industryarc.com)
The fusion ultimately gives rise to a microscopic embryo, from which embryonic stem cells can theoretically be derived. (the-scientist.com)
In the best case, an early embryo consisting of a few cells may form, but these are not capable of giving rise to human life, nor hESCs for therapeutic purposes. (the-scientist.com)
The resulting clone developed into a microscopic embryo, which survived long enough for pluripotent stem cell lines to be derived. (the-scientist.com)
This process gets rid of unneeded cells and is particularly important for "sculpting" tissue and organ structure during development of the embryo (or larval metamorphosis in insects), but may occur at any time even in adult cells when a tissue needs to be remodeled. (agemed.org)
When 50% of embryonal cells lose viability, the remaining cells can survive and maintain the viability of the embryo, establishing pregnancy. (bebekistiyorum.com)
The egg begins dividing and growing once it is stimulated then it develops into an embryo which can be implanted into a gestational surrogate where it will be carried to term. (nyln.org)
It is also our view that there are no sound reasons for treating the early-stage human embryo or cloned human embryo as anything special, or as having moral status greater than human somatic cells in tissue culture. (wikiquote.org)
Nor is the embryo just a "fertilized egg", or just a "clump of cells", or appear only when the zygote is formed, or appear later after the zygote is formed, or appear after implantation - or even a week after that at 14-days. (lifeissues.net)
And despite the sowing of deep Jesuitical doubts as to when a new human embryo begins to exist by the likes of many researchers, lawyers, theologians, and philosophers, or by the 1973 Roe vs. Wade decision, there really is no doubt or confusion as to when a new human embryo begins to exist -- and hasn't been for over 125 years. (lifeissues.net)
The first to study the human embryo systematically was Wilhelm His, Sr., who established the basis of reconstruction, i.e., the assembling of three-dimensional form from microscopic sections. (lifeissues.net)
In it the human embryo was studied as a whole for the first time. (lifeissues.net)
That's the decision of members of the Organizing Committee for the International Summit on Human Gene Editing who, after three days debating the potential for genetically tinkering with embryo, sperm, or egg cells from human donors, concluded it would be "irresponsible" to go ahead now. (slashgear.com)
The technique involves transferring genetic material from the nucleus of an egg or embryo from a woman carrying a mitochondrial disease into an egg or embryo from a healthy donor that has had its nuclear DNA removed, but where the healthy mitochondria remain. (medscape.com)

The human female reproductive system is a series of organs primarily located inside the body and around the pelvic region of a female that contribute towards the reproductive process. (wikipedia.org)
The major reproductive organs of the male can be grouped into three categories. (wikipedia.org)
clarification needed][no main verb] The three main fetal precursors of the reproductive organs are the Wolffian duct, the Müllerian ducts, and the gonads. (wikipedia.org)
The external part of the female reproductive organs is called the vulva , which means covering. (kidshealth.org)
Located between the legs, the vulva covers the opening to the vagina and other reproductive organs inside the body. (kidshealth.org)
This chapter describes the different parts of the female reproductive system: the organs involved in the process of reproduction, hormones that regulate a woman's body, the menstrual cycle, ovulation and pregnancy, the female's role in genetic division, birth control, sexually transmitted diseases and other diseases and disorders. (wikibooks.org)
They are the same in that most of the reproductive organs of both sexes develop from similar embryonic tissue, meaning they are homologous. (wikibooks.org)
Both systems have gonads that produce (sperm and egg or ovum) and sex organs. (wikibooks.org)
And both systems experience maturation of their reproductive organs, which become functional during puberty as a result of the gonads secreting sex hormones. (wikibooks.org)
Cross-sectional diagram of the female reproductive organs. (wikibooks.org)
In short, this is a known list of sex organs that evolve from the same tissues in a human life. (wikibooks.org)
Describe the process of an erection in the female reproductive organs. (quizlet.com)
At puberty, the reproductive organs in females and males begin to produce hormones and become capable of reproduction. (britannica.com)
The reproductive system consists of male and female reproductive organs and is complete in each fluke. (medscape.com)
Prolonged exposure to high concentrations of ZDTPs, calcium alkyl phenates, and magnesium, sodium, and calcium sulphonates had significant effects on the reproductive organs of male rabbits (testicular atrophy and reduction or absence of spermatozoa) which appeared to be species specific. (cdc.gov)
5 United Nations General Assembly - Resolution A/RES/71/322 on Strengthening and promoting effective measures and international cooperation on organ donation and transplantation to prevent and combat trafficking in persons for the purpose of organ removal and trafficking in human organs, September 2017. (who.int)
Over time, our cells age and change, and our organs may not function as well. (medlineplus.gov)
How old your cells, tissues, and organs appear to be based on your body's overall health and functioning. (medlineplus.gov)

It seems like it has the benefits of adult stem cell research (no controversry over destroying embryos) and the benefits of embryonic stem cell research (the possibility of discovering therapies that can't be derived from adult stem cells). (nationalgeographic.com)
For example, the opponents of research that involved destroying human embryos had celebrated a new technology developed in Japan that turned regular adult cells into something resembling potent embryonic cells. (lifeboat.com)
Researchers reported in Nature on November 22, 2007, that they successfully isolated 2 embryonic stem cell lines from cloned embryos made using cells from the skin of an adult rhesus macaque. (nih.gov)
Egg donation uses the technology of in vitro fertilization - IVF to obtain eggs from one woman, the egg donor, fertilize them in the laboratory and then place the embryos into another woman, the recipient. (ivf1.com)
Thus, while we hear much about helping the infertile and trying to obtain stem cells from cloned embryos for use in medical treatments, I am convinced if we found non-cloning sources for both objectives, many biotechnologists would just shrug and keep on cloning. (cbc-network.org)
Using a cell-sorting machine that can separate out the marked cells, the team obtained reproductive cells from mouse ovaries and showed that the cells would generate viable egg cells that could be fertilized and produce embryos. (cbc-network.org)
A couple of studies show some success in generating early microscopic embryos, but this [study] is the first successful pluripotent stem cell line," said Daley. (the-scientist.com)
This could help researchers identify abnormalities in iPSC differentiation, correct them, and develop pluripotent stem cells that don't harbor tumorigenic qualities and do not require the use of human embryos. (the-scientist.com)
In 1972, mice embryos were frozen first and this was followed by the freezing of human embryos. (bebekistiyorum.com)
Moreover, most early-stage embryos that are produced naturally (that is, through the union of egg and sperm resulting from sexual intercourse) fail to implant and are therefore wasted or destroyed. (wikiquote.org)
Franklin P. Mall, who studied under His, established the Carnegie Embryological Collection in Baltimore and was the first person to stage human embryos (in 1914). (lifeissues.net)
Mall's collection soon became the most important repository of human embryos in the world and has ever since served as a "Bureau of Standards" for the science of human embryology. (lifeissues.net)
Mall's successor, George L. Streeter, laid down the basis of the currently used staging system for human embryos (1942-48), which was instituted in 1942 , completed by Ronan O'Rahilly (1973) and revised by O'Rahilly and Fabiola Muller (1987), and updated every 3-5 years by the international nomenclature committee (FIPAT) - to the present (January 2011). (lifeissues.net)
This should remove the ethical objections that some people have to harvesting from donated human embryos. (newscientist.com)
The embryos appear to undergo the same changes as naturally fertilised eggs, producing waves of calcium ions across the cell every 20 to 30 minutes. (newscientist.com)
Some prohibit only cloning for reproductive purposes and allow the creation of cloned human embryos for research, whereas others prohibit the creation of cloned embryos for any purpose. (who.int)
The stem cells suits human needs, does not cause harm and can be obtained from both adult and fetal does not conflict with religious beliefs, it has tissues, umbilical cord and early embryos. (who.int)
Unicellular for those cells that are derived from human organisms are primed to replicate (clone) pre-embryos, which seem to have a high themselves by nature. (who.int)

Each ovary contains hundreds of egg cells or ova (singular ovum). (wikipedia.org)
The primary direct function of the male reproductive system is to provide the male sperm for fertilization of the ovum. (wikipedia.org)
The male gamete, or sperm, and the female gamete, the egg or ovum, meet in the female's reproductive system. (kidshealth.org)
In the human reproductive process, two kinds of sex cells ( gametes), are involved: the male gamete (sperm), and the female gamete (egg or ovum). (wikibooks.org)
It wasn't until 1827 that the true nature of human fertilization was understood with the revelation of the ovum. (liquid-nutrition-vitamins.com)
IVF refers to as In vitro fertilization which is a type of assisted reproductive technology and are widely used technology in which the ovum is fertilized artificially in laboratory settings and then inserted into the uterus. (industryarc.com)
FACTS: The egg cell, or ovum, is the largest and most important cell in the world - and it's only found in women! (giantmicrobes.com)
The egg cell, or ovum, is the female reproductive cell. (giantmicrobes.com)
Ovum comes from the Latin: Ovum=egg. (giantmicrobes.com)
Reproductive cloning versus germ cell (egg, ovum). (who.int)

Combinations of estrogen and progestin work by preventing ovulation (the release of eggs from the ovaries). (medlineplus.gov)
They must inject themselves daily for four weeks with large doses of hormones to encourage their ovaries to produce numerous mature oocytes while simultaneously suppressing the normal menstrual cycle, which would eject the eggs into the fallopian tubes. (discovermagazine.com)
The process ends with major surgery, complete with general anesthesia, as a surgeon pierces a donor's vaginal wall with a needle and sucks the eggs out of the ovaries. (discovermagazine.com)
As part of his vision of a dystopian future, Huxley took readers on a tour of a human hatchery where eggs matured in carefully maintained ovaries before being fertilized and developed in bottles. (discovermagazine.com)
During in vitro fertilization, seen here, an egg is removed from the ovaries and fertilized with sperm in a laboratory. (futurity.org)
Researchers at Massachusetts General Hospital say they have extracted stem cells from human ovaries and made them generate egg cells. (cbc-network.org)
They then applied the same method to human ovaries donated by women at the Saitama Medical Center in Japan who were undergoing sex reassignment because of a gender identity disorder. (cbc-network.org)
In females at puberty, the ovaries begin to produce egg cells, and the uterus becomes capable of carrying a developing fetus. (britannica.com)
Egg freezing is the procedure of freezing and storing the egg cells retrieved from the ovaries of a woman for future use to have children. (bebekistiyorum.com)
In 2004, he conducted studies on ovaries in mice, showing that certain active stem cells have the potential to regenerate eggs throughout one's lifespan. (lse.ac.uk)
Experiments need only be extended to human ovaries, which are fast approaching. (lse.ac.uk)
Rethinking the â€œbiological clock,â€ a new study suggests that womenâ€™s ovaries continue to form new eggs throughout life. (contemporaryobgyn.net)
Analyzing an earlier study, reproductive biologists argue in PLoS Genetics that oocyte-producing stem cells (OSCs) in ovaries continue to divide after birth, producing new eggs even into adulthood. (contemporaryobgyn.net)
In the traditional view, female mammals' ovaries at birth contain all the eggs they will have throughout life. (contemporaryobgyn.net)
Recent research, however, has shown that adult mouse and human ovaries contain OSCs capable of dividing and creating new oocytes. (contemporaryobgyn.net)
In a study published in February in PLoS Genetics , researchers used a new technique to count a cell's "depth," or how many times it has divided, finding that ovaries of older mice released eggs with significantly greater depth than those of younger mice. (contemporaryobgyn.net)

They also play a role in the repair of damaged cells and tissues. (oncolink.org)
The cells have separated into those that represent the fetus (inner cell mass) and those cells which will go on to produce other tissues like placenta (trophoblast). (ivf1.com)
The related concept of Longevity Determination , however, is the result of a species-specific genomic expression during early development that positions the somatic tissues of an organism to survive long after its reproductive period has been completed. (agemed.org)
Certain human cell and tissue-based products, such as umbilical cord blood, gestational tissues, and reproductive tissues, can harbor Zika virus even months after the initial infection. (cdc.gov)
If you have been diagnosed with or possibly exposed to Zika virus within the past 6 months you should not donate cells or tissues, such as umbilical cord blood, placenta or other gestational tissues, or reproductive tissues (oocytes [eggs] or semen). (cdc.gov)
Some scientists thought these animals might have longer lifespans due to their slower metabolic rates and lower energy demands, resulting in less damage to their cells and tissues and a slower aging process. (medlineplus.gov)

When an egg pops out of an ovary, it enters the fallopian tube. (kidshealth.org)
Within the flower, sperm cells are produced by pollen at the tips of stamens, while egg cells develop in ovules, tiny structures embedded in the ovary at the base of the pistil. (ucdavis.edu)
It works by preventing the release of an egg from the ovary or preventing fertilization of the egg by sperm (male reproductive cells). (medlineplus.gov)
But the mature egg gets to leave the ovary and take a daring journey down a fallopian tube where it has the chance of encountering eligible sperm. (giantmicrobes.com)

Once the egg is in the fallopian tube, tiny hairs in the tube's lining help push it down the narrow passageway toward the uterus. (kidshealth.org)
They also change the lining of the uterus (womb) to prevent pregnancy from developing and change the mucus at the cervix (opening of the uterus) to prevent sperm (male reproductive cells) from entering. (medlineplus.gov)
Between Day 7 and 11 , the lining of the uterus (womb) starts to thicken, waiting for a fertilized egg to implant there. (greatdad.com)
The egg travels down the fallopian tube towards the uterus. (greatdad.com)
If a sperm unites with the egg here, the egg will attach to the lining of the uterus, and pregnancy occurs. (greatdad.com)
This is the type of fluid encountered by sperm migrating through the cervix and uterus to the oviduct where the egg is fertilized. (frontiersin.org)
The tube, which connects the peritoneal space to the endometrial cavity, captures the egg after ovulation and transports the sperm from the uterus to the fertilization site in the ampulla (the middle portion of the tube). (medscape.com)

Human reproduction usually involves internal fertilization by sexual intercourse. (wikipedia.org)
and the cytoplasmic machinery and energy which drives cell division after fertilization comes only from the egg. (drmalpani.com)
When it comes to eggs, though, the success of in vitro fertilization has created a demand far exceeding supply. (discovermagazine.com)
In the procedure of in vitro fertilization, or IVF, a woman requires hormonal treatments via injection to stimulate egg production. (futurity.org)
Smoking cuts IVF success rate In a study published in the journal Human Reproduction, infertile women who smoke were found to have lower pregnancy rates and higher miscarriage rates during treatment with in vitro fertilization - IVF. (ivf1.com)
As part of the study, Noggle and his colleagues developed new protocols that allow women to choose between giving their eggs to research or in vitro fertilization programs. (the-scientist.com)
While women have always been paid for donating their eggs for in vitro fertilization, ethical guidelines have prevented researchers from paying women for their eggs. (the-scientist.com)
As most women will not donate altruistically, this has left researchers working with the poor-quality eggs rejected from in vitro fertilization. (the-scientist.com)
According to the researcher's new protocols, women are paid to donate, but only later choose whether their eggs should go to research or in vitro fertilization. (the-scientist.com)
From in vitro fertilization in the 1970s to today's research into artificial gametes from stem cells or somatic cells that would allow sperm and eggs to be created from anyone's cells, regardless of age, gender or sexuality. (we-make-money-not-art.com)
We are currently showing the work in progress at the Human+ exhibition at the Science Gallery in Dublin, previewing four stories of hypothesized reproductive futures: from genetics ('multiple biological mothers' - where more than two people's DNA is part of fertilization), through to more "practical" near-future scenarios like the possibility of full term gestation in artificial wombs. (we-make-money-not-art.com)
Despite the popular idea that the fastest and fittest male reproductive cell is the one that wins the fertilization race, research has shown that spermatozoa often team up to navigate the female reproductive tract in a wide range of mammalian species. (frontiersin.org)
Reproductive Technologies Not Tied to Maternal CVD No increase in risk for cardiovascular disease was seen among women who gave birth after in vitro fertilization or the use of other assisted reproductive technologies. (medscape.com)

In addition, we are studying selected aspects of meiosis in human oocytes. (uni-goettingen.de)
Mechanism of spindle pole organization and instability in human oocytes. (uni-goettingen.de)
On average, 500-1000 oocytes are ovulated during a woman's reproductive lifetime. (wikibooks.org)
In their new paper, Science author Woo Suk Hwang from Seoul National University in Seoul, Korea and colleagues replaced the nuclei from donated oocytes with nuclei from skin cells from male and female patients, ranging in age from 2 to 56, who had spinal cord injuries, juvenile diabetes and the genetic disease "congenital hypogamma-globulinemia. (scienceblog.com)
From the 185 donated oocytes, endowed with the genetic material from a different person (or in one case, the same person), the researchers report development of 31 hollow balls of cells called "human nuclear-transfer blastocysts. (scienceblog.com)
The ten additional new lines resulted from nuclear transfer with skin cells of males or females and oocytes from biologically-unrelated females. (scienceblog.com)
The growth of egg cells (oocytes) are monitored with ultrasound examination 3-4 times. (bebekistiyorum.com)
Human eggs (oocytes) could not be frozen for a long time or the trials were unsuccessful. (bebekistiyorum.com)
Water molecules inside the oocytes crystallize and subsequently may cause cell injury. (bebekistiyorum.com)

The ion rush triggers, among other things, the sperm's intense swimming needed to navigate the viscous reproductive tract. (acs.org)
4. Cluster of cells surrounding an egg that prepares it for release into the human female reproductive tract. (quizlet.com)
The tendency for sperm to cluster together as they make their way upstream through the thickish, elastic-like fluid of the female reproductive tract is more than just random behavior. (frontiersin.org)
The researchers wanted to learn the possible biological benefits of this seemingly strange behavior at a scale and in a setting that's not easy to study - specifically, currents of viscoelastic fluid flowing through narrow channels in the female reproductive tract. (frontiersin.org)
In a series of experiments using bovine sperm (a good model for the human variety) and a microfluidic device to mimic the physical parameters of the female tract, they observed how sperm clustered in viscoelastic fluid reacted to different flow scenarios. (frontiersin.org)
Better understanding the physics of how sperm navigate through the complicated female reproductive tract to fertilize the egg may have implications for infertility treatments and beyond. (frontiersin.org)

In a woman's lifetime perhaps 400 will become full-grown eggs capable of being fertilized by sperm. (discovermagazine.com)
IVF is assisted reproductive technology (ART) which works by removing eggs from a woman's body. (industryarc.com)
Every day of a woman's fertile life, several dozen eggs begin developing. (giantmicrobes.com)
Like a princess in a fairytale, an egg cell has only about a single day to survive before finding a mate - though because sperm cells can survive for up to 5 days inside a woman's body, a woman can be fertile for nearly a week. (giantmicrobes.com)
Usually by Day 7 , a woman's eggs start to prepare to be fertilized by sperm. (greatdad.com)
One IVF technique involves injecting sperm directly into eggs in the lab and then implanting them into the woman's womb. (newscientist.com)

Each cell (except for red blood cells) contains a nucleus that houses these chromosomes. (cdc.gov)
Genes are located on chromosomes, thread-like structures found within the nucleus of cells. (realdetroitweekly.com)
Each human cell typically contains 46 chromosomes, grouped into 23 pairs. (realdetroitweekly.com)
The egg cells, when injected into mice, generated follicles, the ovarian structure in which eggs are formed, as well as mature eggs, some of which had a single set of chromosomes, a signature of eggs and sperm. (cbc-network.org)
In the end, the egg cell contained three sets of chromosomes-two from the diploid somatic cell, and one from the haploid egg. (the-scientist.com)
Haploid organisms reproduce via mitosis cell division and have one set of chromosomes. (phys.org)
Another method is ' haploidisation ' where a normal body cell is stimulated to become a gamete by splitting and ejecting half of its chromosomes. (we-make-money-not-art.com)
In sexual reproduction , a gamete (such as an egg or sperm cell) with a single set of chromosomes (haploid) combines with another gamete to produce a zygote, which then develops into an organism composed of cells with two sets of chromosomes. (tutorialspoint.com)
The result is the production of four haploid gametes, each with half the chromosomes of each parent cell but with the genetic material in the parental chromosomes recombined after two rounds of cell division. (tutorialspoint.com)
A multicellular diploid phase or generation is created after numerous cell divisions occur without the number of chromosomes changing. (tutorialspoint.com)
Each cell in the human reproductive system has 23 pairs of 46 chromosomes . (tutorialspoint.com)
Each cell of the developing child will contain 23 chromosomes from each parent, for a total of 46 when the nuclei of the gametes combine to create a fertilized egg or zygote. (tutorialspoint.com)
Human eggs contain two sets of chromosomes, one of which is normally jettisoned within two hours of fertilisation. (newscientist.com)
Chromosomes are structures within cells that contain a person's genes. (msdmanuals.com)
Genes are contained in chromosomes, which are in the cell nucleus. (msdmanuals.com)
Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. (msdmanuals.com)
A karyotype is a picture of the full set of chromosomes in a person's cells. (msdmanuals.com)
DNA (deoxyribonucleic acid) is the cell's genetic material, contained in chromosomes within the cell nucleus and mitochondria. (msdmanuals.com)
Except for certain cells (for example, sperm and egg cells and red blood cells), the cell nucleus contains 23 pairs of chromosomes. (msdmanuals.com)

On May 18, the Bombay High Court sought Mumbai-based Hinduja Hospital's reply after a couple moved the court seeking to complete a surrogacy procedure, which commenced before Parliament passed the Assisted Reproductive Technologies (ART) Act and the Surrogacy Act in December 2021. (thehindu.com)
China Launches Campaign Against Illegal Fertility Treatments China will 'severely crack down' on illegal activities related to the use of assisted reproductive technologies such as the buying or selling of sperm or eggs and surrogacy, in a 6-month campaign to assuage widespread public concern. (medscape.com)

Noggle said the findings may also pave the way for better induced pluripotent stem cells (iPSCs), which form when somatic cells are regressed to a pluripotent state through the use of genetic factors. (the-scientist.com)

The work in our laboratory combines several innovative approaches towards understanding the fundamental principles underlying meiosis, including advanced microscopy techniques (such as super-resolution, light sheet, expansion, and focused ion beam electron microscopy), loss-of-function approaches (Trim-Away, RNAi in cultured follicles, and mouse genetics), as well as in vitro ovarian culture and sequencing (including single-cell RNA-seq). (uni-goettingen.de)
In in vitro gametogenesis, eggs and sperm can be made in the lab from any cell in a person's body. (futurity.org)
It's only a matter of time before scientists will be able to take cells from a person's mouth or skin and, using a process called in vitro gametogenesis, turn those cells into human eggs or sperm. (futurity.org)
This, Adashi says, is what motivated the National Academies of Sciences, Engineering and Medicine to host a multi-day workshop discussing scientific, ethical, and regulatory implications of in vitro-derived human reproductive cells. (futurity.org)
In vitro studies based on MCF-7 cell proliferation and induction of vitellogenin in primary culture of rainbow trout hepatocytes. (cdc.gov)

About eight years ago, as the controversy about research involving human embryonic stem cells was winding down and Barack Obama was about to take office, I had one of my regular lunches with a respected conservative policy expert. (lifeboat.com)

Chromosome errors in human eggs shape natural fertility over reproductive life span. (uni-goettingen.de)
Finally, the group used their discovery to make additional egg cells within plant reproductive structures, raising the prospects that these techniques may someday be used for enhancing the reproduction and fertility of crop plants. (ucdavis.edu)
Semen plays a major part in male reproductive health and fertility. (liquid-nutrition-vitamins.com)
Conner says, "Scientists are about to request a licence from the UK fertility watchdog to fertilise the eggs as part of tests to generate an unlimited supply of human eggs - a breakthrough that could help infertile women to have babies as well as making women as fertile in later life as men. (lse.ac.uk)
This article aims to go behind the normative discussions that usually surround different forms of assisted reproductive technology (ART), fertility tourism, and the egg trade. (lu.se)
Big Geographic Access Gaps for Oncofertility Services in US A recent study uncovered significant geographic disparities in access to fertility preservation services for young women of reproductive age in the US. (medscape.com)
The Fertile Future of Fertility Technology New tech -- from AI to robotics to stem cells -- will soon make IVF and other assisted reproductive tech faster, cheaper, and more successful. (medscape.com)

These genes come from the male's sperm and the female's egg. (kidshealth.org)

The process of gastrulation is linked to determination of mesodermal cell fates, such that patterning of tissue fates and patterning of cell behavior are interconnected. (nature.com)
No one knew whether human ovarian tissue could survive the process--after all, that kind of deep freeze normally kills mature eggs. (discovermagazine.com)
Their ability to replicate and generate specialised cells and tissue holds the promise to treat degenerative diseases like Parkinson's disease, diabetes, leukaemia and spinal chord injury. (org.in)
If there are intact cells in this tissue they have been 'stored' frozen. (wikiquote.org)
A blastocyst (cloned or not), because it lacks any trace of a nervous system, has no capacity for suffering or conscious experience in any form - the special properties that, in our view, spell the difference between biological tissue and a human life worthy of respect and rights. (wikiquote.org)
If trade-offs exist between somatic growth and reproduction for this species, a reduction in the physiological condition of swamp fish should be accompanied by reduced development of reproductive tissue (gonad mass), as found in other fish (Wu et al. (researchgate.net)
There is no information about reproductive tissue transplantation as a method of treating infertility in the African Region. (who.int)
4 World Health Assembly - Resolution WHA63.22 on Human organ and tissue transplantation, May 2010. (who.int)
One of the greatest controversies triggered tissue, a stem cell encoding for heart tissue by the rapid pace of evolution in biology, will eventually develop into heart tissue particularly in genomics and biotechnology, and so on. (who.int)

We do this through our genes , the special carriers of human traits. (kidshealth.org)
The total chromosomal content of a cell involves approximately 105 genes in a specialized macromolecule of deoxyribonucleic acid (DNA). (cdc.gov)
Genes contain instructions for the cell on how to make proteins. (oncolink.org)
Genes tell cells how to work, control our growth and development, and determine what we look like and how our bodies work. (oncolink.org)
Use the body's own immune system by inserting genes into cancer cells that then trigger the body to attack the cancer cells as foreign invaders. (oncolink.org)
Insert genes into cancer cells so that chemotherapy , radiation therapy , or hormone therapies can attack the cancer cells more easily. (oncolink.org)
Create "suicide genes" that can enter cancer cells and cause them to self-destruct. (oncolink.org)
Use genes to protect healthy cells from the side effects of therapy, allowing higher doses of chemotherapy and radiation to be given. (oncolink.org)
You can imagine it would be hard to actually inject these genes into the tiny cells, so a carrier, or a "vector," is used to do this. (oncolink.org)
Their Stowers Institute for Medical Research is a not-for-profit organization in Kansas City that seeks to prevent and cure diseases by sponsoring research on genes that control the process of cells. (mdn.org)
Two separate research teams have figured out how to "reprogram" cells with just a handful of genes to give them the characteristics of embryonic stem cells. (nih.gov)
A breakthrough in somatic cell nuclear transfer opens the possibility of producing human embryonic stem cells with a patient's own genes. (the-scientist.com)
While iPSCs avoid the ethical issues surrounding embryonic stem cells, the methods used to derive them sometimes induce mutations in cancer causing genes, making them unsuitable for therapeutic purposes. (the-scientist.com)
Cells become cancerous by accumulating, stepwise, a series of several mutations that alter the function of genes important for cell growth. (agemed.org)
Scientists were initially interested in somatic-cell nuclear transfer as a means of determining whether genes remain functional even after most of them have been switched off as the cells in a developing organism assume their specialized functions as blood cells, muscle cells, and so forth. (who.int)
The fact that the DNA of a fully differentiated (adult) cell could be stimulated to revert to a condition comparable to that of a newly fertilized egg and to repeat the process of embryonic development demonstrates that all the genes in differentiated cells retain their functional capacity, although only a few are active. (who.int)
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body or the code for functional ribonucleic acid (RNA) molecules. (msdmanuals.com)
Humans have about 20,000 to 23,000 genes. (msdmanuals.com)

But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not essential to keeping an individual alive. (kidshealth.org)
this is because humans, like other species, undergo a series of changes as they mature and age, in accordance with their biological life cycle. (britannica.com)
Here's what I mean: Each try at somatic cell nuclear transfer (SCNT) cloning to manufacture a human being (or, member of the species Homo sapiens , if you prefer) requires a human egg. (cbc-network.org)
Aging is a physical process that doesn't normally reveal itself until after the completion of a species-specific interval of reproductive competence during which adults rear their progeny from childhood to independence (See Life History ). (agemed.org)
CR has been effective in all species in which it has been tried (although the jury is still out on humans). (agemed.org)
While the practice has been successful on certain mammals, it is still a hotly debated topic in terms of the human species. (nyln.org)
The work, called Reproductive Futures , is still very much in progress but the first results of the project are on view right now at the Science Gallery in Dublin as part of an exhibition that considers the future of our species. (we-make-money-not-art.com)
Given that we have an efficiency of 1% cloning for livestock species and if only one in a thousand cells are viable then around 100,000 cells would need to be transferred. (wikiquote.org)
Furthermore, in many fish species, low DO levels result in changes to energy allocation, leading to endocrine dis-ruption and the impairment of male reproductive processes (Wu et al. (researchgate.net)
The flukes that cause most human infections are Schistosoma species (blood fluke), Paragonimus westermani (lung fluke), and Clonorchis sinensis (liver fluke). (medscape.com)
These flame cells provide the basis for the identification of the species. (medscape.com)
longipalpis bites humans in different habitats, as well as the fact that female sand flies from nonanthropophilic populations can be induced to feed on humans in the laboratory indicate that this species has no strong innate host preference. (cdc.gov)
At least in experimental animals, genetical y modified strains, because on the differential effects of a wide greater susceptibility to chemical in these species the interval between variety of carcinogens in humans at carcinogens in utero and during birth and sexual maturity is only a different stages of life, including var early postnatal life is usual y man few weeks. (who.int)
However, amphibian aging rates were associated with the number of eggs they laid each year: Species that laid more eggs per year tended to age more quickly. (medlineplus.gov)

In the human reproductive process, two kinds of sex cells, or gametes (GAH-meetz), are involved. (kidshealth.org)
This produces two haploid gametes, such as sperm and egg in humans, which fuse to form a new diploid organism. (phys.org)
B) In diplontic life cycles, mitosis only occurs in the diploid phase with haploid cells only functioning as gametes. (phys.org)
Apart from gametes which ART does Reproductive Futures take into account? (we-make-money-not-art.com)
Creating cells that will function as gametes is just one part of this, so it's not totally cut off from other aspects of research. (we-make-money-not-art.com)
In the eukaryotic process of meiosis , which involves genetic recombination, diploid mother cells divide to create haploid cells known as gametes . (tutorialspoint.com)

Before this new study was published, Nature asked another group of researchers to confirm that the stem cells were genetically identical to the donor skin cells. (nih.gov)
The global IVF Services Market based on Cycle Type can be further segmented into Fresh IVF Cycle, Donor-Egg IVF Cycle, and Thawed IVF Cycle. (industryarc.com)
The Donor-Egg IVF Cycle segment is estimated to register the fastest CAGR of 2.5% for the period 2021-2026. (industryarc.com)
The advance here is the proof that somatic cell nuclear transfer can work [in human cells] and can fully reset the donor cell genome to a pluripotent state," said Harvard Medical School's George Daley , who was not affiliated with the study. (the-scientist.com)
if it implants and the pregnancy goes to term, the resulting individual will carry the same nuclear genetic material as the donor of the adult somatic cell. (who.int)
However, an animal created through this technique would not be a precise genetic copy of the source of its nuclear DNA because each clone derives a small amount of its DNA from the mitochondria of the egg (which lie outside the nucleus) rather than from the donor of cell nucleus. (who.int)
Thus, the clone would be genetically identical to the nucleus donor only if the egg came from the same donor or from her maternal line. (who.int)

and the female reproductive system which functions to produce egg cells, and to protect and nourish the fetus until birth. (wikipedia.org)
The breasts are involved during the parenting stage of reproduction, but in most classifications they are not considered to be part of the female reproductive system. (wikipedia.org)
The Wolffian duct forms the epididymis, vas deferens, ductus deferens, ejaculatory duct, and seminal vesicle in the male reproductive system, but essentially disappears in the female reproductive system. (wikipedia.org)
The male reproductive system and the female reproductive system both are needed for reproduction. (kidshealth.org)
What Is the Female Reproductive System? (kidshealth.org)
The reproductive systems of the male and female have some basic similarities and some specialized differences. (wikibooks.org)
The differences between the female and male reproductive systems are based on the functions of each individual's role in the reproduction cycle. (wikibooks.org)
Describe the role of gonadotropin-releasing hormone (GnRH) in the control of female reproductive functions. (quizlet.com)
The semen contains sperm which can impregnate female eggs. (liquid-nutrition-vitamins.com)
The primary purpose of sperm and seminal fluid is to safeguard sperm cells in the female reproductive system from bacterial and fungal infections. (liquid-nutrition-vitamins.com)
The single cell line generated in the 2004 Science paper resulted from nuclear transfer in which the oocyte and non-reproductive ("somatic") cell came from the same healthy female. (scienceblog.com)
At the time, New Scientist described the research as 'male eggs' and 'female sperm' . (we-make-money-not-art.com)
How far away are the "female sperm" and "male eggs" from reality? (we-make-money-not-art.com)
This paper outlines the debates prompted through a reproduction mechanism involv- by progress in cloning research, with special ing male and female germ cells. (who.int)

Humans, like other organisms, pass some characteristics of themselves to the next generation. (kidshealth.org)
These organisms come into contact with humans through contaminated water. (the-scientist.com)
Cloning in biotechnology refers to processes used to create copies of DNA fragments ( molecular cloning ), cells (cell cloning), or organisms . (wikiquote.org)
This difference is extremely important because many of the metals are harmful to human health and living organisms. (cdc.gov)
The term applies not only to entire organisms but also to copies of molecules (such as DNA) and cells. (who.int)

One of the next preclinical steps, according to the authors, is to evaluate, in the lab, differentiated patient-specific human embryonic stem cell lines for immune-system tolerance, therapeutic efficacy and safety. (scienceblog.com)
The findings validate this controversial method, and may one day allow therapeutic stem cells to be created from a patient's own genetic material. (the-scientist.com)
The triploid cells aren't suitable for therapeutic purposes, and future efforts will be focused on trying to eliminate the [egg cell] genome," said Daley, who wrote an accompanying News & Views in Nature . (the-scientist.com)
It would have been more prudent to ban just reproductive cloning -- so halting a brave new world -- and move ahead on therapeutic cloning, to check if it worked or not. (org.in)
Reproductive cloning in humans and therapeutic cloning in primates: is the ethical debate catching up with the recent scientific advances? (bmj.com)
This cell then has therapeutic cloning: the global the capacity to divide and grow into an exact replica of the original from whom the debate somatic cell was taken. (who.int)

In the United States those voluntary donors receive several thousand dollars for each harvest of eggs, and it is hard-earned pay. (discovermagazine.com)
Oocyte donors and patients who donated non-reproductive cells were all unpaid volunteers. (scienceblog.com)
For underage donors of non-reproductive cells, both parents signed informed-consent agreements. (scienceblog.com)

The development of women's "eggs" are arrested during fetal development. (wikibooks.org)
which may render the genetic mate doses of NDMA is the kidney, but a Transplacental carcinogenesis rial of fetal cells highly accessible to much lower incidence of tumours is stu dies with ENU in nonhuman pri carcinogens. (who.int)

They produce, store, and release eggs into the fallopian tubes in the process called ovulation (av-yoo-LAY-shun). (kidshealth.org)

The team that isolated the embryonic stem cell lines was led by Dr. Shoukhrat Mitalipov at Oregon Health and Science University in Portland. (nih.gov)
The stem cells, the researchers showed, could turn into heart or nerve cells in the laboratory, and had other characteristics of established embryonic stem cell lines. (nih.gov)
Scientists have isolated the first human embryonic stem cell lines specifically tailored to match the nuclear DNA of patients, both males and females of various ages, suffering from disease or spinal cord injury. (scienceblog.com)
Each of the 11 new human embryonic stem cell lines was created by transferring the nuclear genetic material from a non-reproductive cell of a patient into a donated egg, or "oocyte," whose nucleus had been removed. (scienceblog.com)

Now there is hope of leveling the reproductive playing field somewhat--several recent experiments promise to lead to a vast supply of human eggs. (discovermagazine.com)
Claims that you could clone individual treatments of human beings to treat common diseases like diabetes, suggests you need a huge supply of human eggs. (wikiquote.org)

The breakthrough may eventually put to rest the ethical controversy surrounding stem cells. (nih.gov)
In a Science "Policy Forum" related to the team's latest findings, David Magnus and Mildred Cho from Stanford University in Palo Alto, CA discuss international oversight and ethical issues in oocyte donation, including the need to promote realistic expectations of the outcomes of stem cell research. (scienceblog.com)
As such, some nations have banned human cloning because of the ethical issues that might arise. (nyln.org)
One of the interesting ethical questions is about how we establish whether it's safe or not, without actually allowing it to happen in a human being. (we-make-money-not-art.com)
Gene-editing on human reproductive cells on a large scale may be possible, but the ethical and safety issues still outweigh the urgency to put it into practice. (slashgear.com)
The conference was an opportunity to put the fast-progressing genetic modification research into a greater context since, as the committee pointed out, "the prospect of human genome editing raises many important scientific, ethical, and societal questions. (slashgear.com)
A trick that persuades human eggs to divide as if they have been fertilised could provide a source of embryonic stem cells that sidesteps ethical objections to existing techniques. (newscientist.com)
This could eliminate one of the main sources of ethical controversy in this research," says Bob Lanza, head of research at the cloning company Advanced Cell Technology in Worcester, Massachusetts. (newscientist.com)
Cloning technology, however, is perceived as having the potential for reproductive cloning, which raises serious ethical and moral concerns. (who.int)

The virus vector must be genetically changed to carry human DNA. (oncolink.org)

Egg and sperm develop in a process called meiosis. (uni-goettingen.de)
When reproductive cells, such as sperm and eggs, are formed, they undergo a process called meiosis. (realdetroitweekly.com)
At the start of the process of egg-cell development, a "mother cell" in the ovule divides several times, in a sequence involving both meiosis and mitotic divisions. (ucdavis.edu)
At the beginning of Xenopus gastrulation, the presumptive anterior mesoderm cells located at the dorsal marginal zone (DMZ) roll inward at the midline of the blastopore lip in a process called involution. (nature.com)
When one entity dumps so much money into the process it does not seem the other side is well represented," said Carl Landwehr, president of the Vitae Caring Foundation, an organization that releases educational ads in opposition to the stem cell initiative. (mdn.org)
In particular, the efficiency of the process will have to be improved before the technique could be applied in the clinic using human cells. (nih.gov)
To achieve this success, Scott Noggle at the New York Stem Cell Foundation Laboratory took a unique approach to the process. (the-scientist.com)
For the first time researchers can now compare iPSC differentiation to the same process an egg goes through after the transfer of a somatic cell genome. (the-scientist.com)
Define zygote intrafallopian transfer (ZIFT) Zygote Intra-fallopian Transfer (ZIFT) is a clinical process conducted under assisted reproductive technology. (artbabyeggdonors.com)
In animals including humans, implantation is a fundamental process to get pregnant. (artbabyeggdonors.com)
Reproductive cloning is a process that has been around for a long time. (nyln.org)
A process called somatic cell nuclear transfer, where the nucleus of a somatic cell is extracted and inserted into an egg that's had its nucleus removed. (nyln.org)
Around Day 14 (in a 28-day cycle), hormones cause the egg that is most ripe to be released, a process called ovulation. (greatdad.com)
Although mean daily fecundity was not affected after the selection process, this, together with the decrease in the survival and fecundity levels by specific age, significantly affected the gross reproductive rate (GRR), net reproductive rate (Ro), and intrinsic growth rate (rm) of the group selected for five generations with deltamethrin compared to the group without selection. (cdc.gov)
The human oviduct, also known as the fallopian tube, is an essential component of the normal reproductive process. (medscape.com)

In some cases, some cells are taken from the patient and the virus is exposed to the cells in the laboratory. (oncolink.org)
These cells are allowed to grow in the laboratory. (oncolink.org)
We may soon be able to grow unlimited numbers of perfectly healthy, fertilizable human eggs in the laboratory. (discovermagazine.com)
As with the mice, the team was able to retrieve reproductive cells that produced immature egg cells when grown in the laboratory. (cbc-network.org)
These cell lines will enable the study of human disease in cells in the laboratory. (scienceblog.com)
In laboratory culture, these cell lines displayed signs of immunological compatibility with the patients' cells, Science authors reported. (scienceblog.com)
The researchers generated these stem cell lines ten times more efficiently than in their 2004 Science study, using improved laboratory methods. (scienceblog.com)
Other improvements over the last paper include the reduced use of animal products in laboratory procedures and better evidence that the cell lines matched the patients' cells and did not have a parthenogenetic origin, where unfertilized eggs can divide on their own. (scienceblog.com)

Let's say you object to stem cell research because each blastocyst is a unique human being with a unique genome and the capacity for life. (nationalgeographic.com)
We had come to be friends who respectfully disagreed about embryonic stem cell research and other bioethics issues. (lifeboat.com)
JEFFERSON CITY - A husband and wife, both cancer survivors, are the source of nearly 97 percent of the campaign funds in support of the stem cell research proposal on the November ballot, according to the Missouri Ethics Commission. (mdn.org)
Their institute, located in Kansas City, has warned that it will not go forward with its 600,000 square-foot expansion if Missouri voters reject the Stem Cell Research and Cures Initiative on Nov. 7 according to Connie Farrow, spokeswoman for the Coalition. (mdn.org)
James and Virginia believe that the new frontier is stem cell research," Farrow said. (mdn.org)
The Korean researchers who performed this stem cell research improved upon their protocols that yielded the first embryonic stem cell line from a cloned human blastocyst. (scienceblog.com)
Is a consensus possible on stem cell research? (bmj.com)
While genetic modification and stem-cell research have been progressing for some time, the summit was prompted by a new way of gene editing that has seen rapid acceleration in recent years. (slashgear.com)

Humans have a high level of sexual differentiation. (wikipedia.org)
Endocrine hormones are a well-known and critical controlling factor in the normal differentiation of the reproductive system. (wikipedia.org)
In addition, researchers must develop methods to efficiently direct the differentiation of embryonic stem cells to specific stable cell types. (scienceblog.com)

Stem cells were then derived from the inner cell mass of the blastocyst. (scienceblog.com)
Nor do only the cells of the inner cell mass of the blastocyst become the later adult and none of the cells from the inner cell mass become part of the placenta, umbilical cord, etc. (lifeissues.net)
The tricked eggs divide for four or five days until they reach 50 to 100 cells - the blastocyst stage. (newscientist.com)

Once the gene has reached the cell, it must go to the cell's nucleus (where the DNA, or genetic code is) and combine with the human genetic material. (oncolink.org)

Women may make new eggs throughout their reproductive years, suggests a new stem-cell study that challenges a long-held biological tenet. (nationalgeographic.com)
An expert at West Virginia University suggests human thought will soon communicate directly with computers, which will move us toward an era of 'computing at the speed of thought. (lifeboat.com)

Instead of removing the egg genome prior to nuclear transfer, he and his colleagues added the somatic cell nucleus directly to the intact egg. (the-scientist.com)
Scientists Solve the Genetic Puzzle of Sex-related Y Chromosome Scientists have taken an important step forward in understanding the human genome by fully deciphering the enigmatic Y chromosome, which could help guide research on infertility in men. (medscape.com)

It is important to recognize that the acidity of seminal fluid impacts the movement and the capability of sperm to fertilize an egg. (liquid-nutrition-vitamins.com)
The sperm can fertilize an egg at any point during that time. (greatdad.com)

In research published in eLife on July 10, scientists identify five cells from the parasites' early stage of infection that form adult stem cells, a portion of which contribute to the growth of the reproductive system. (the-scientist.com)

ON NOVEMBER 6, 2003, the legal committee of the UN General Assembly decided that a vote to ban research on the reproductive cloning of human beings need not be taken up till the end of 2005. (org.in)
Elaboration of an international convention against reproductive cloning of human beings has been under consideration in the United Nations since December 2001 when the subject was included in the agenda of the fifty- sixth session as a supplementary agenda item at the request of France and Germany. (who.int)

Cloning entails taking the nucleus - the compartment that contains the DNA - from an adult cell and putting it into an egg from which the original nucleus has been removed. (nih.gov)
Somatic cell nuclear transfer typically involves the transfer of genomic information from a somatic cell into an unfertilized egg cell whose nucleus has been removed. (the-scientist.com)

other scientists are working on making sperm from bone marrow stem cells. (we-make-money-not-art.com)

In addition, it is of medical relevance: depending on the age of the woman, 10% to more than 50% of human eggs are aneuploid due to chromosome segregation errors during the first and second meiotic division. (uni-goettingen.de)
In humans, each individual inherits one copy of each chromosome from their mother and one copy from their father. (realdetroitweekly.com)

Neither the article nor the abstract I linked to makes it clear whether this could be a viable source of stem cells for the large-scale research that scientists really want to do. (nationalgeographic.com)
In fact, it's only a matter of time before scientists will be able to use a person's cheek cell to custom-create any kind of cell, Adashi says. (futurity.org)
The advance, if confirmed, might provide a new source of eggs for treating infertility, though scientists say it is far too early to tell if the work holds such promise…The new research, by a team led by the biologist Jonathan L. Tilly, depends on a special protein found to mark the surface of reproductive cells like eggs and sperm. (cbc-network.org)
The work also moves scientists one step closer to the goal of transplanting healthy cells into humans to replace cells damaged by diseases such as Parkinson's and diabetes. (scienceblog.com)
From the 31 nuclear-transfer blastocysts, the scientists derived 11 stem cell lines. (scienceblog.com)
What is clear is that scientists in many areas are working on getting cells to change their function. (we-make-money-not-art.com)
Swann hopes to be the first to harvest embryonic stem cells from human parthenogenetic blastocysts, but other scientists are trying different approaches. (newscientist.com)
The con- is removed and replaced by a nucleus of cept of human cloning has long been in the another cell type, the stem cell will then imagination of many scientists, scholars and be reprogrammed to produce the product fiction writers [ 1 ]. (who.int)
Scientists want to know why-and what it could mean for humans. (medlineplus.gov)

We are looking for highly motivated students with a background in bioinformatics, cell biology or genetics who are interested in joining our friendly, international and multidisciplinary team. (uni-goettingen.de)
But in an ironic bit of timing researchers at the Reproductive Genetics Institute have just published some results at Reproductive BioMedicine Online that could-possibly-short-circuit some of the arguments against using embryonic stem cells. (nationalgeographic.com)
The question of whether two white people can have a black baby often arises due to the curiosity surrounding genetics, inheritance, and the complexities of human ancestry. (realdetroitweekly.com)
The real experts to ask about the accurate scientific facts of human embryology are the scientific experts in human embryology who are academically credentialed Ph.D. human embryologists - not the "experts" in cell biology, genetics, doctors, nurses, theologians, lawyers or politicians, secretaries, news journalists, etc. (lifeissues.net)

Before patient-specific stem cells can potentially be used in the clinic, a variety of issues must be addressed, the researchers emphasized. (scienceblog.com)
Before the technique will ever make it to the clinic, however, researchers must find a way to remove genomic material from the egg cell. (the-scientist.com)
Researchers discover cells in the early life stage of the Schistosoma mansoni parasite that contribute to adults' reproductive systems. (the-scientist.com)

Internal signals producing apoptosis depend on interactions of several proteins and may serve to protect the organism from cancer by killing cells that have pre-cancerous changes. (agemed.org)
What happens in reproductive cloning is that a duplicate copy of another organism is made. (nyln.org)

Biologists classify humans, for example, as belonging to the phylum Chordata (backboned animals), the order of primates (which includes apes and monkeys), and the genus Homo. (phys.org)
The more likely cause, the biologists argue, is that the progenitor OSCs continue to divide as the animal ages, creating eggs with greater depth later in life. (contemporaryobgyn.net)

Currently, the procedure for isolating non-reproductive cells for the nuclear transfer method involves animal enzymes and serum. (scienceblog.com)
Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete (such as an egg or sperm cell) has a single set of chromos (diploid). (tutorialspoint.com)

So it is unlikely that the cells would be viable. (wikiquote.org)
Let's say that one in a thousand cells were nevertheless viable, practical issues come into play. (wikiquote.org)

In humans and other animals, the germ cells for production of eggs and sperm are established at birth. (ucdavis.edu)

Specialized cells that surround and nourish egg cells release progesterone, which makes calcium ions rush into human sperm. (acs.org)
Semen is rich in minerals and helps nourish sperm and sperm cells. (liquid-nutrition-vitamins.com)

The grown cells are then given back to the patient by intravenous (IV) infusion or are injected into a body cavity (i.e. the lung) or a tumor. (oncolink.org)
Conner reports that the first human egg cells grown from stem cells could be fertilized later this year. (lse.ac.uk)

A fun, hands-on way to learn about biology, health and your remarkable reproductive system. (giantmicrobes.com)
A new study published in the journal Frontiers in Cell and Developmental Biology offers some compelling reasons behind a newly identified clustering behavior. (frontiersin.org)

The morphogenetic movements of gastrulation rearrange the three germ layers precursors, positioning mesodermal cells between outer ectodermal and inner endodermal cells to shape the head-to-tail body axis. (nature.com)

Anatomy19

Organisms9

Diseases1

Chemicals and Drugs7

Analytical, Diagnostic and Therapeutic Techniques and Equipment2

Psychiatry and Psychology1

Phenomena and Processes8

Disciplines and Occupations1

Technology, Industry, Agriculture5

Information Science1

Embryo34

Organs18

Embryos18

Ovum10

Ovaries16

Tissues6

Ovary4

Uterus7

Fertilization13

Oocytes9

Tract6

Woman's6

Chromosomes19

Assisted Reproductive Technologies2

Somatic cells1

Vitro5

Involving human embryonic stem1

Fertility7

Female's1

Tissue9

Genes18

Species14

Gametes6

Donor7

Female14

Organisms5

Therapeutic6

Donors3

Fetal2

Fallopian tubes1

Embryonic stem cell4

Supply of human eggs2

Ethical9

Genetically1

Process15

Laboratory8

Stem cell res8

Differentiation3

Blastocyst3

Genetic material1

Suggests2

Genome2

Fertilize2

Adult stem1

Cloning of human beings2

Nucleus has been removed2

Bone marrow1

Chromosome2

Scientists9

Genetics4

Researchers3

Organism2

Biologists2

Involves2

Viable2

Germ cells1

Nourish2

Grown2

Biology2

Precursors1