Species embryos. Medical search. Frequent questions

After intracytoplasmic sperm injection (ICSI), 48 embryos were evaluated on day 3 of their development, according to their cell number. (who.int)

A calf was born from an embryo lacking cells which form a large part of the placenta, providing new insight into the regenerative capacity of mammalian embryos. (eurekalert.org)
When nonhuman mammalian development is compared with human development, the study subjects must be compared at the same developmental stage (fetal, perinatal, postnatal) When collected appropriately, data from experimental studies of nonhuman mammalian embryos elucidate important aspects of human facial development. (medscape.com)

The effect of test chemical was studied on the early life stage of zebrafish embryos. (europa.eu)

Depending on the species, a blastula or blastocyst stage embryo can appear as a ball of cells on top of yolk, or as a hollow sphere of cells surrounding a middle cavity. (wikipedia.org)
The space inside the embryo spreads, and the morula becomes a blastocyst. (nature.com)
The blastocyst consists of two types of cells, the inner cell mass (ICM) and the trophectoderm (TE), which develop into an embryo proper and a large part of the placenta, respectively. (eurekalert.org)
We identified Nop2 as an essential gene for development to the blastocyst stage while performing an RNA interference (RNAi)-based screen in mouse preimplantation embryos. (umass.edu)
Taken together, our results demonstrate that Nop2 is an essential gene for blastocyst formation, and is required for RNA processing and/or stability in vivo during preimplantation embryo development in the mouse. (umass.edu)

Drosophila embryos are easily amenable to imaging because they are more transparent than the embryos of other model organisms, such as mice. (nature.com)
Introduction of small molecules to the developing Drosophila embryo offers great potential for characterizing biological activity of novel compounds, drugs, and toxins as well as for probing fundamental developmental pathways. (jove.com)
Methods described herein outline steps that overcome natural barriers to this approach, expanding the utility of the Drosophila embryo model. (jove.com)

Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. (wikipedia.org)
The development of a zygote into a multicellular embryo proceeds through a series of recognizable stages, often divided into cleavage, blastula, gastrulation, and organogenesis. (wikipedia.org)
This can be explained by several factors, including the presence of embryos in distinct embryological stages, differential preservation of bones, and loss of elements during transport and burial, with part of the egg content expelled. (scitechdaily.com)
German zoologist Ernst Haeckel (1834-1919) popularized this idea of a vertebrate embryo going through supposed evolutionary stages with the infamous phrase "ontogeny recapitulates phylogeny. (icr.org)
These species would not be able to cope with temperatures within that higher range by the year 2100 when taking all the stages of their lives into consideration. (hydrogenfuelnews.com)
This means that in less than 80 years, nearly two thirds of ocean fish species may not be able to survive through all the stages of their lives. (hydrogenfuelnews.com)
That is, 1 in 10 fish species would not be able to cope through all their life stages. (hydrogenfuelnews.com)
Haeckel produced these artistic drawings, supposedly based on his own specimens 1 of different embryos, claiming that all of them pass through stages reminiscent of their evolutionary ancestors. (answersingenesis.org)
The thermal sensitivity of early life stages can play a fundamental role in constraining species distributions. (lu.se)

An embryo is an initial stage of development of a multicellular organism. (wikipedia.org)
In human development, the term fetus is used instead of embryo after the ninth week after conception, whereas in zebrafish, embryonic development is considered finished when a bone called the cleithrum becomes visible. (wikipedia.org)
Our experimental observations show how, over the course of their natural development, thousands of swimming embryos come together to form living chiral crystal structures that persist for many hours," they say. (discovermagazine.com)
The formation and dissolution of these living chiral crystals is driven entirely by the embryos' development process. (discovermagazine.com)
A striking feature of the living chiral crystals is that they nucleate, grow and dissolve naturally as embryos progress through their development," say Tan, Mietke and colleagues. (discovermagazine.com)
It gets turned on early in the development of the female embryo. (sciencedaily.com)
Thus, embryo development is highly dynamic. (nature.com)
Reasons for the delayed development of in vivo and in vitro production of equine embryos include the scarce availability of abattoir ovaries and the lack of interest from horse breeders and registries. (ivis.org)
Therefore, it's hardly surprising that they are also convinced that bird embryos progress through a stage of dinosaur hip development. (icr.org)
Implantation of the human embryo leads to a number of changes in organization that are essential for gastrulation and future development 1 . (nature.com)
Another recent study of snail development revealed that prodding an embryo could make its shell spiral in the opposite direction to normal . (newscientist.com)
78 Mito-TEMPO, a scavenger for mitochondria-derived reactive oxygen species, enhances porcine pre-implantation embryo development. (logosbio.com.cn)
Recording and contextualizing the science of embryos, development, and reproduction. (asu.edu)
The expression pattern and function of Nop2 during early mammalian embryo development, however, has not been investigated. (umass.edu)
The endomesoderm gene regulatory network (GRN) models the transcriptional control system defining vegetal specification of the sea urchin( Strongylocentrotus purpuratus ) embryo during the first 30 hours of development. (biologists.com)
In some nests stranded on dry land, embryos even endured well after full development, until a pool was replenished by rain-and a few successfully hatched into tadpoles. (scientificamerican.com)
During development, secretions from the oviduct walls nourish the embryos. (aquariumofpacific.org)
To encourage use of electronic technologies to deliver educational information regarding the development, application and research in embryo related technologies, including but not limited to, nuclear transfer, genetic enhancement of animals, embryo and gamete biology, and food safety and risk assessment of products arising from embryo biotechnology. (iets.org)
Here, we studied maternal investment and embryo energy use and allocation in wall lizards spanning altitudinal regions, as potential mechanisms that enable successful development to hatching in cool climates. (lu.se)
Specifically, we compared population-level differences in (1) investment from mothers (egg mass, embryo retention and thyroid yolk hormone concentration), (2) embryo energy expenditure during development, and (3) embryo energy allocation from yolk towards tissue. (lu.se)
Instead, embryos from the high-altitude region used less energy to complete development, that is, they developed faster without a concomitant increase in metabolic rate, compared with those from the low-altitude region. (lu.se)
Fez family zinc - finger protein 1 and 2 (Fezf1 and 2) are expressed in the OE and VNO, respectively, of mouse embryos , and are involved in the development and maintenance of ORCs. (bvsalud.org)
In this study, we examined the expression of Fezf1, Fezf2, and Bcl11b in the olfactory organs of embryos in three turtle species, Pelodiscus sinensis, Trachemys scripta elegans, and Centrochelys sulcata, to evaluate their involvement in the development of reptile olfactory organs. (bvsalud.org)
Several drugs that are now in late-stage clinical development have novel mechanisms of action and very broad activity against Candida species, including C auris, Hoenigl noted. (medscape.com)
In vivo and in organized cells, and proper symmetry are healthy individuals, macrophages can characteristics of higher-quality embryos, which phagocytize DNA that has been passively point to healthy development and higher rates of released into the blood from apoptotic or necrotic implantation. (who.int)

However, other procedures based on the in vivo and in vitro production of equine embryos have emerged in recent years. (ivis.org)
Although it is possible to culture structures derived from human blastocysts ex vivo, these cultures do not recapitulate the events and structural organization of the in vivo embryos 6 ( Supplementary Information ). (nature.com)

The consortium successfully created two new northern white rhino embryos between October 2021 and February 2022. (matadornetwork.com)

But these tiny sacs of cells hold the embryo of a Northern White Rhino. (telegraph.co.uk)
During cleavage, the overall size of the embryo does not change, but the size of individual cells decrease rapidly as they divide to increase the total number of cells. (wikipedia.org)
Many visible changes in embryonic structure happen throughout gastrulation as the cells that make up the different germ layers migrate and cause the previously round embryo to fold or invaginate into a cup-like appearance. (wikipedia.org)
The report notes that the gene, eed, when functioning normally in female mouse embryos, keeps the paternal X chromosome inactive and many of its genes shut down in early placental cells. (sciencedaily.com)
This gene is also involved in telling cells where to go in the embryo - to make head versus tail versus gut. (sciencedaily.com)
Because the cells in embryos are considerably crowded, an algorithm to segment individual cells in detail and accurately is needed. (nature.com)
In early embryos, cells are loosely connected to each other. (nature.com)
At the 8-cell stage, the embryo becomes compact, and the cells form a spherical mass called a morula. (nature.com)
They were expressed specifically in hatching gland cells (HGCs), which differentiated from the pillow and migrated to the edge of the head in both species. (elsevierpure.com)
image: An early bovine embryo regenerating its TE cells which will later form a large part of the placenta. (eurekalert.org)
Scientists led by Manabu Kawahara at Hokkaido University have shown that, since bovine ICM cells can regenerate TE, they are capable of forming both the embryo and placenta. (eurekalert.org)
Mouse naive embryonic stem cells have recently been shown to give rise to embryonic and extra-embryonic stem cells capable of self-assembling into post-gastrulation structured stem-cell-based embryo models with spatially organized morphogenesis (called SEMs) 3 . (nature.com)
CEF, chicken embryo fibroblast cells. (cdc.gov)
The experiments will involve inserting human stem cells into rat and mouse embryos. (bigthink.com)
Stem cell biologist Hiromitsu Nakauchi plans to grow a small amount of human cells inside rat and mouse embryos - both of which will be altered so the animals can't produce a pancreas - for about 15 days. (bigthink.com)
In March, Japan overturned a ban on growing human cells inside animal embryos for more than 14 days. (bigthink.com)
But some bioethicists are concerned that introducing human cells into other species' embryos could cause problems. (bigthink.com)
The current experiments are designed to test the limits of growing human cells inside animal embryos. (bigthink.com)
In the US, where a portion of the population is opposed to destruction of human embryos to obtain stem cells, what avenues are open to scientists for obtaining pluripotent cells that do not offend the moral sensibilities of a significant number of citizens? (asu.edu)
Cells in the oviduct walls are stimulated by the embryos using specialized fetal teeth to produce the secretions. (aquariumofpacific.org)
In many turtle species, the UCE contains ciliated olfactory receptor cells (ORCs) and the LCE contains microvillous ORCs. (bvsalud.org)
Low-quality embryos, on the other cells, thereby maintaining a relatively low basal hand, frequently display morphological level [16-18]. (who.int)

In other multicellular organisms, the word "embryo" can be used more broadly to any early developmental or life cycle stage prior to birth or hatching. (wikipedia.org)
e ) Representative images of human embryos fixed at different developmental time-points (as shown in a) and immunostained for F-actin and PARD6. (elifesciences.org)
and (3) evidence of developmental dynamism relating to ability to progress, in a structurally organized manner, through morphologically characterized developmental milestones of the early post-implantation human embryo following initial aggregate formation 3 . (nature.com)
Previous research has typically focused on comparing developmental time between different species rather than looking for similarities within a single species. (newscientist.com)
But finding out more about the heritability of developmental speed is important, because changes in this speed have been linked to the evolution of new species. (newscientist.com)
Some anatomical structures in the developing embryo disappear completely or regress substantially once they serve their developmental purpose, remaining only as scar-like vestiges (literally, "footprints") in the mature human. (answersingenesis.org)
How embryos overcome the developmental constraints posed by cool climates is crucial knowledge for explaining the persistence of oviparous species in such environments and for understanding thermal adaptation more broadly. (lu.se)

Sometimes this is called the pre-embryo a term employed to differentiate from an embryo proper in relation to embryonic stem cell discourses. (wikipedia.org)
The embryonic period varies from species to species. (wikipedia.org)
Embryo-like models with spatially organized morphogenesis and structure of all defining embryonic and extra-embryonic tissues of the post-implantation human conceptus (that is, the embryonic disc, the bilaminar disc, the yolk sac, the chorionic sac and the surrounding trophoblast layer) remain lacking 1 , 2 . (nature.com)
Such human fully integrated and complete SEMs recapitulate the organization of nearly all known lineages and compartments of post-implantation human embryos, including the epiblast, the hypoblast, the extra-embryonic mesoderm and the trophoblast layer surrounding the latter compartments. (nature.com)

Embryological studies of cross compatibility of species within the genus Trifolium L. III. (eurekamag.com)
Genera 4, species 10--12 (1 genus, 1 species in the flora): nearly worldwide. (efloras.org)

Najib Balala, Kenya's Cabinet Secretary for Tourism, said: "The Kenyan government is delighted that the Northern White Rhino IVF project, has been able to successfully produce three pure Northern White Rhinos embryos ready for implantation into the Southern White Rhino as surrogate in the coming months. (telegraph.co.uk)
Before implanting into the uterine wall the embryo is sometimes known as the pre-implantation embryo or pre-implantation conceptus. (wikipedia.org)
Embryo morphology al ows options, the discovery of cell-free DNA in the evaluation of its growth, viability, and biological fluids has led to major advances in implantation capacity. (who.int)

1980). The species complex has a very variable shell morphology, and the shell bands are sometimes absent (Clench and Fuller 1965), but it always has an adextral (right-handed) shell with 3-5 inflated whorls separated by deeply indented incisions. (usgs.gov)

330 genera, 3780 species: worldwide, especially temperate. (berkeley.edu)
eight genera and 51 species (18 endemic) in China. (efloras.org)

Seeds of the endangered species Zizania texana are recalcitrant, making it difficult to preserve the remaining genetic diversity of this species in genebanks. (usf.edu)
Seeds of temperate fruit species need a long time to germinate as a result of their requirement of stratification or cold treatment. (ashs.org)
Seeds of temperate fruit species do not germinate as a result of seed dormancy even if conditions such as water, temperature, and oxygen are suitable for germination. (ashs.org)
Generally, these germination problems in temperate fruit species are successfully overcome by cold stratification of seeds for several months during winter. (ashs.org)
However, seeds of temperate fruit species require a long time to germinate under traditional stratification or natural conditions. (ashs.org)
Seeds of most Arctostaphylos species have hard seed coats and dormant embryos. (wildflower.org)

To analyse the time-series 3D microscopic images of developing embryos with fluorescently labelled nuclei, these studies used image segmentation. (nature.com)

RNAi-mediated knockdown of Nop2 results in embryos that arrest as morula. (umass.edu)

The University of California Museum of Paleontology stated, "Embryos do reflect the course of evolution, but that course is far more intricate and quirky than Haeckel claimed. (icr.org)

The Primary study outlines the effect of test chemical on the early life stage of zebrafish the test was conducted in accordance with OECD 236 guidelines, fish embryo toxicity test. (europa.eu)
the test was conducted in accordance with OECD 236 guidelines, fish embryo toxicity test. (europa.eu)
The drug is contraindicated in pregnancy, owing to embryo-fetal toxicity. (medscape.com)

This allows self-sustained waves to propagate through a material, in this case driven by small differences in the rotation between embryo pairs. (discovermagazine.com)
We showed that the extracted criteria could be used to evaluate the differences between individual embryos. (nature.com)
Also, further studies could reveal the mechanism of cell fate decision in mammals and its differences between species. (eurekalert.org)
However, this research team examined the differences in heat tolerance between larvae, embryos, and spawning and non-spawning adults. (hydrogenfuelnews.com)

But now scientists have successfully four eggs from Najin and six from Fatu and fertilised them with sperm from a dead male, creating three viable embryos which they are hoping to implant into a surrogate later this year. (telegraph.co.uk)
Only a handful of isolated occurrences of eggs and embryos have been reported so far. (scitechdaily.com)
Our findings further demonstrate the exceptional conditions necessary for the preservation of such fragile material and can explain the notable paucity of pterosaur eggs and embryos in the paleontological record compared to other reptiles, because the preservation potential of soft-shelled specimens is regarded as very poor," said co-author Dr. Jiang Shunxing of the IVPP. (scitechdaily.com)
However, a fresh study of 51 fossil species and 29 living species which could be categorized as oviparous (laying hard or soft-shelled eggs) or viviparous (giving birth to live young) suggests otherwise. (scitechdaily.com)
Sometimes, closely related species show both behaviors, and it turns out that live-bearing lizards can flip back to laying eggs much more easily than had been assumed. (scitechdaily.com)
Scientists had previously hypothesized that several frog and toad species use foam to protect eggs from desiccation, but few studies had tested the idea. (scientificamerican.com)
The team found that the embryos could indeed successfully develop in a dried-up pool if the eggs encasing them were protected by slimy frog foam. (scientificamerican.com)
As birds are the natural reservoir host for flu, influenza typically grows well in eggs and maintains a safe distance between species you're using to make the vaccine and the target. (cdc.gov)

NOP2-deficient embryos exhibit reduced blastomere numbers, greatly increased apoptosis, and impaired cell-lineage specification. (umass.edu)

We are excited that a viable, Northern White Rhino embryo has developed with the help of Geri. (telegraph.co.uk)
A fter Sudan, the last male northern white rhino, died in 2018 , it was up to science to save the species. (matadornetwork.com)
This brings the total up to 14 northern white rhino embryos. (matadornetwork.com)
The embryos were then cryopreserved and will eventually be supported by southern white rhino female surrogates. (matadornetwork.com)
Eleven embryos were produced from Fatu and Suni, and three embryos were produced from Fatu and Angalifu, a white rhino who died in 2014 at the San Diego Zoo. (matadornetwork.com)

Over a hundred specimens of Stenopterygius from Holzmaden and surrounding areas in Germany have been found with embryos, ranging from one to eleven in number. (sciencedaily.com)
Hwang Woo-suk, a geneticist in South Korea, claimed in Science magazine in 2004 and 2005 that he and a team of researchers had for the first time cloned a human embryo and that they had derived eleven stem cell lines from it. (asu.edu)

The project to revive the Northern White population has been ongoing for several years but it was not until 2018 that scientists successfully achieved the first test-tube rhino embryo from the frozen sperm of a Northern White male and the egg from a Southern White female. (telegraph.co.uk)

A newly developing human is typically referred to as an embryo until the ninth week after conception, when it is then referred to as a fetus. (wikipedia.org)
Timing of compaction and polarization in human embryos. (elifesciences.org)
a ) Scheme for human embryo culture. (elifesciences.org)
Supernumerary in vitro fertilized human embryos were warmed at day 3, and cultured for 2, 9, or 24 hr to examine the localization of polarization markers. (elifesciences.org)
For example, evolutionists state that folds in the neck (pharyngeal pouches) of the human embryo correspond to the gills in our fishlike ancestors! (icr.org)
The Japanese government plans to let a stem cell researcher conduct human-animal embryo experiments, with the ultimate goal of someday creating organs to be transplanted into humans. (bigthink.com)
In 2018, He Jiankui uploaded a series of videos to a YouTube channel titled "The He Lab" that detailed one of the first instances of a successful human birth after genome editing had been performed on an embryo using CRISPR-cas9. (asu.edu)
Should we rethink our legal definition of a human embryo? (livescience.com)
Do human embryos replay the evolutionary history of their species as they develop? (answersingenesis.org)
Summed up in the catchy statement, "Ontogeny recapitulates phylogeny," recapitulation theory (also known as the biogenetic law ) was popularized by Ernst Haeckel's nineteenth century illustrations comparing animal and human embryos. (answersingenesis.org)
The moment the human embryo is fertilized to the week of the baby's birth is an important period for human appearance in the normally developing embryo. (medscape.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 aim of this study was to evaluate the influence of temperature during ovary collection/transportation and that of the time interval between ovary collection and processing in the laboratory, on in vitro embryo production efficiency in buffalo species. (unina.it)

Ovary inferior, 1- or 3- or 4-loculed, without true ovules, embryo sacs originating from a central column or at the ovary base, integument absent. (efloras.org)

The specimens can be attributed to Hamipterus tianshanensis, the sole species in this bonebed. (scitechdaily.com)
However, only five ichthyosaur specimens from Britain have ever been found with embryos and none with this many. (sciencedaily.com)
The new specimen, as well as being the first embryo-bearing ichthyosaur recorded from Yorkshire, is also geologically the youngest of the British embryo-bearing specimens, being from the Toarcian Stage of the Jurassic, around 180 million-year-old. (sciencedaily.com)

This new study, analyzing both fossil and living species, found that extended embryo retention (EER) in mothers, not egg-laying, gave these early creatures an evolutionary advantage. (scitechdaily.com)
The findings, recently published in Nature Ecology & Evolution , show that all the great evolutionary branches of Amniota, namely Mammalia, Lepidosauria (lizards and relatives), and Archosauria (dinosaurs, crocodilians, birds) reveal viviparity and extended embryo retention in their ancestors. (scitechdaily.com)
Extended embryo retention (EER) is when the young are retained by the mother for a varying amount of time, likely depending on when conditions are best for survival. (scitechdaily.com)
The first amniotes had evolved extended embryo retention rather than a hard-shelled egg to protect the developing embryo for a lesser or greater amount of time inside the mother, so birth could be delayed until environments become favorable. (scitechdaily.com)
Reference: "Extended embryo retention and viviparity in the first amniotes" by Baoyu Jiang, Yiming He, Armin Elsler, Shengyu Wang, Joseph N. Keating, Junyi Song, Stuart L. Kearns and Michael J. Benton, 12 June 2023, Nature Ecology & Evolution . (scitechdaily.com)

Chlamydia organisms are obligate intracellular bacteria that must be isolated in tissue culture, mice, or chick embryos. (cdc.gov)

Mitochondria are especially sensitive to toxic insults, as they are a major source of reactive oxygen species (ROS), they contain their own DNA (mtDNA) that is unprotected by histone proteins, they contain the electron transport chain that uses electron donors, including oxygen, to generate ATP, and they are important sensors for overall cellular stress. (cdc.gov)
Reactive oxygen species (ROS) Consideringtheantioxidanteffectand thicknessonthesixthdayafterhuman servenotonlyaskeysignalmoleculesin estrogenreceptoractivity,itissuggested menopausalgonadotropinadministra- physiologicalprocesses,butalsohavea thatsilymarinanditscomponentscan tionandtheneveryotherdayaccording roleinpathologicalprocessesinfemale affectfolliculogenesis,oocytematura- tothefollicularsize.Whenatleast3 reproduction.ROSareinvolvedinthe tion,granulosacellapoptosisanden- folliclesmeasured18mm,humancho- modulationofanentirespectrumof dometrialthickness. (who.int)

c ) Time at which compaction is initiated in embryos with known fertilization time. (elifesciences.org)

Then, the researchers will bring the embryos to term in surrogate animals. (bigthink.com)

Researchers say the creation of three pure Northern embryos is a 'hugely encouraging milestone' for the species showing that the procedure is safe and reproducible, and can be performed on a regular basis before the animals become too old. (telegraph.co.uk)
A study authored by UNC researchers and published in the August issue of "Nature Genetics" furthers the understanding of a fundamental biological process in mammals and contributes important new knowledge to gene regulation in the developing embryo. (sciencedaily.com)
Researchers have discovered that spawning adults and embryos are highly affected by rising temperatures. (hydrogenfuelnews.com)
Researchers have discovered an entirely new species of slow loris, Nycticebus kayan, on the island of Borneo. (livescience.com)
Besides finding the Kayan loris (above), researchers have identified two more unique loris species (N. bancanus, N. borneanus), which before had been considered possible sub-species of N. menagensis. (livescience.com)

In general, the addition of different combinations of BAP and GA 3 into the Murashige and Skoog (MS) medium significantly increased the germination ratios of embryos without cotyledons in all species. (ashs.org)
Embryos from high altitudes also allocated relatively more energy towards tissue production, hatching with lower residual yolk: tissue ratios than low-altitude region embryos. (lu.se)

A fossilised dinosaur embryo discovered in southern China may be the most well-preserved ever uncovered. (newscientist.com)
The dinosaur egg containing the embryo had languished for more than a decade in a storeroom in Yingliang Stone Natural History Museum in Nan'an, China, until 2015, when a staff member noticed bones sticking out of the shell and wondered if it may contain an unhatched dinosaur. (newscientist.com)
It is very rare to find dinosaur embryos, especially ones that are intact," she says. (newscientist.com)
Some scientists recently reported that they could allegedly see bird embryos passing through a dinosaur stage, which they interpreted as evidence of evolution. (icr.org)
5 If this is true, then another layer of doubt can be added to the idea that all bird embryos transition through an alleged dinosaur stage. (icr.org)

Do developing embryos really replay the evolutionary history of their species as they develop? (answersingenesis.org)

Understanding the association between Cell-free DNA levels in embryo CM and the quality of embryo cleavage could help improve the quality of IVF techniques. (who.int)
This prospective study was conducted with 96 spent CM from patients undergoing IVF cycle, in order to determine relationships of Cell-free DNA levels in embryo CM with embryo cleavage quality on day 3. (who.int)
We conclude that cel -free DNA levels in CM might be associated with delayed embryo cleavage. (who.int)

We showed that QCANet can be applied not only to developing mouse embryos but also to developing embryos of two other model species. (nature.com)
Using QCANet, we were able to extract several quantitative criteria of embryogenesis from 11 early mouse embryos. (nature.com)
In contrast, none of the more than 100 mouse embryos transferred to recipients developed to term. (eurekalert.org)
B-cell lymphoma / leukemia 11B (Bcl11b) is expressed in the mouse embryo OE except the dorsomedial parts of the nasal cavity , and regulates the expression of odorant receptors in the ORCs. (bvsalud.org)

2. Nuclear transfer is a technique used to duplicate genetic material by creating an embryo through the transfer and fusion of a diploid cell in an enucleated female oocyte.2 Cloning has a broader meaning than nuclear transfer as it also involves gene replication and natural or induced embryo splitting (see Annex 1). (who.int)
Most natural cloning occurs in those species that produce their descendants asexually, that is, without combining the male and female genetic material. (who.int)

Survival following cryoexposure increased from less than 5% to about 75% by preculturing embryos in high concentrations of sugars, bathing them in cryoprotectant solutions, and partially drying them to water contents of about 0.6 g H2O/g dry mass. (usf.edu)

Why are chicken embryos typically the go-to for flu vaccine cultivation? (cdc.gov)
Currently, miltefosine is typically used only for invasive candidiasis "in desperate situations of infections caused by multiresistant Candida species when the novel drugs in the pipeline are not made available through their compassionate use programs," Martin Hoenigl, MD, of the Division of Infectious Diseases and Global Public Health, University of California, San Diego, told Medscape Medical News . (medscape.com)

Analysis of the gene expression revealed that Pacific herring embryos synthesized a large amount of hatching enzyme when compared with Japanese anchovy. (elsevierpure.com)
Thus, the difference in their gene expression levels between two species is correlated with the difference in the thickness of chorion. (elsevierpure.com)

Its display in Yorkshire's Jurassic World incorporates the latest digital technology to reveal the embryos and to explain the significance of the discovery. (sciencedaily.com)

Do Bird Embryos Show Evidence of Evolving from Dinosaurs? (icr.org)

At this stage, with embryos just a few hours old, the cilia on the cell surfaces begin to synchronize causing the organisms to rotate slowly, all in the same direction. (discovermagazine.com)
For time-lapse observation of early-stage D rosophila embryos, Keller et al. (nature.com)

As female mammals have two X chromosomes (XX) and males an X and Y (XY), imbalance occurs because female embryos have twice as many X-linked genes. (sciencedaily.com)
Magnuson pointed out that X inactivation also occurs within the embryo itself, not just in early placental (trophoblast) material surrounding the embryo. (sciencedaily.com)

The Nonindigenous Occurrences section of the NAS species profiles has a new structure. (usgs.gov)
Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. (usgs.gov)

The skull roof was not well ossified before the animal hatched, and no teeth were found in any of the embryos. (scitechdaily.com)
By far, the most commonly found ichthyosaur with embryos is Stenopterygius . (sciencedaily.com)
Sarah King, curator of natural science at the Yorkshire Museum, said: "This is an incredible find and the research by Dean and Mike has helped us confirm it is the first example of fossilised ichthyosaur embryos to be found in Yorkshire. (sciencedaily.com)
This particular species is found in the central-east highland area of Borneo and is named for a major river flowing in its region, the Kayan. (livescience.com)
This species is found in freshwater low-flow lentic streams, lakes, and ponds. (usgs.gov)

Since 2019, the team retrieved 119 oocytes from Fatu, which has resulted in 14 successful embryos. (matadornetwork.com)

Day 2 and day 3 CM corresponding to each one of the embryos was analyzed, by quantitative PCR, for estimation of Cell-free DNA levels. (who.int)

In 1986, Wildt argued that artificial reproductive technologies should only be used for species conservation efforts if standard techniques to aid natural reproduction are not effective. (asu.edu)

The German sites are approximately the same age as the new specimen from Whitby and it is possible that the new specimen is also Stenopterygius , but no identifiable features are preserved in the adult or embryos. (sciencedaily.com)
However, the research that indicated that only 5 percent of fish species would be vulnerable to that increase in temperature was based only on an analysis of adult fish. (hydrogenfuelnews.com)

Moreover, the embryos are not associated with any stomach contents commonly seem in Early Jurassic ichthyosaurs, such as the remains of squid-like belemnites. (sciencedaily.com)
Boyd, M. J. and Lomax, D. R. The youngest occurrence of ichthyosaur embryos in the UK: A new specimen from the Early Jurassic (Toarcian) of Yorkshire . (sciencedaily.com)

The foxa gene is an integral component of the endoderm specification subcircuit of the endomesoderm gene regulatory network in the Strongylocentrotus purpuratus embryo. (biologists.com)

The embryos of modern birds also adopt a tucked posture to protect themselves for hatching. (newscientist.com)
C. psittaci has been isolated from approximately 100 bird species but is most commonly identified in psittacine (parrot-type) birds, especially cockatiels and parakeets. (cdc.gov)

Tzer Han Tan at Harvard University and Alexander Mietke at MIT, and colleagues, made their discovery while studying how developing starfish embryos interact with each other. (discovermagazine.com)

Anatomy61

Organisms26

Diseases11

Chemicals and Drugs48

Analytical, Diagnostic and Therapeutic Techniques and Equipment43

Phenomena and Processes66

Disciplines and Occupations4

Technology, Industry, Agriculture1

Information Science5

Named Groups1

Health Care1

Intracytoplasmic Sperm Inj1

Mammalian embryos2

Zebrafish Embryos1

Blastocyst5

Drosophila3

Stages9

Development25

Vivo2

20211

Cells22

Developmental7

Embryonic4

Genus2

Implantation3

Morphology1

Genera2

Seeds6

Fluorescently1

Morula1

Haeckel1

Toxicity3

Differences4

Eggs8

Apoptosis1

White Rhino5

Eleven2

Successfully1

Human12

Laboratory1

Sacs1

Specimens3

Retention5

Tissue culture1

Reactive2

Fertilization1

Surrogate1

Researchers5

Ratios2

Dinosaur5

Evolutionary1

Cleavage3

Mouse4

Genetic2

Concentrations1

Typically2

Gene expression2

Reveal1

Dinosaurs1

Stage2

Occurs2

Occurrences2

Found5

Oocytes1

Quantitative1

Reproductive1

Adult2

Early2

Endoderm1

Birds2

Interact1