Loading...
  • equivalent
  • He criticised the court for not fulfilling its role in philosophical jurisprudence, and leaving several key 'areas of uncertainties in its wake', including if embryos are therefore equivalent to personal property. (bionews.org.uk)
  • quality
  • Michael Hauskeller, Associate Professor of Sociology and Philosophy at the University of Exeter, led a fascinating discussion of the conventional meaning of dignity and of Immanuel Kant's argument that dignity depends on autonomy - a quality that embryos lack. (bionews.org.uk)
  • cell
  • When the first two-cell blastomere to divide does so meridionally (ME embryos), the orientation of the first cleavage is predictive of the orientation and polarity of the embryonic-abembryonic axis. (biologists.org)
  • Thus, in embryos dividing in this way, the progeny of the earlier meridionally dividing cell contribute predominantly to the embryonic part of the blastocyst. (biologists.org)
  • division
  • By contrast, when the earlier of the second cleavage divisions occurs equatorially or obliquely and is followed by a meridional division (EM embryos), the orientation of the first cleavage is predictive of the orientation of the embryonic-abembryonic axis but not its polarity. (biologists.org)
  • create human embryos
  • The researchers, at Oregon Health and Science University, took skin cells from a baby with a genetic disease and fused them with donated human eggs to create human embryos that were genetically identical to the 8-month-old. (kottke.org)
  • Embryo space colonization is a theoretical interstellar space colonization concept that involves sending a robotic mission to a habitable terrestrial planet, dwarf planet, minor planet or natural satellite transporting frozen early-stage human embryos or the technological or biological means to create human embryos. (wikipedia.org)
  • embryonic stem cel
  • Here I sit, on either end of embryonic stem cell research, trying to find some connection between my embryos and the research that might help me and countless others with MS, Parkinson's, Alzheimer's or other debilitating conditions. (latimes.com)
  • Abortion rights advocates, advocates of embryonic stem cell research, and members of the fertility industry object to referring to the transfer as an "adoption" because they feel it gives an embryo the same status as a child. (wikipedia.org)
  • frozen embryo transfer
  • Direct Frozen Embryo Transfer: Embryos can be frozen by SPF in ethylene glycol freeze media and transfer directly to recipients immediately after water thawing without laboratory thawing process. (wikipedia.org)
  • In fact, pregnancy rates are increased following frozen embryo transfer, and perinatal outcomes are less affected, compared to embryo transfer in the same cycle as ovarian hyperstimulation was performed. (wikipedia.org)
  • A scientific review in 2013 came to the conclusion that it is not possible to identify one method of endometrium preparation in frozen embryo transfer as being more effective than another. (wikipedia.org)
  • oocyte
  • Spare oocytes or embryos resulting from fertility treatments may be used for oocyte donation or embryo donation to another woman or couple, and embryos may be created, frozen and stored specifically for transfer and donation by using donor eggs and sperm. (wikipedia.org)
  • Oocyte age, survival proportion, and number of transferred embryos are predictors of pregnancy outcome. (wikipedia.org)
  • A study of more than 11,000 cryopreserved human embryos showed no significant effect of storage time on post-thaw survival for IVF or oocyte donation cycles, or for embryos frozen at the pronuclear or cleavage stages. (wikipedia.org)
  • Gene expression profiling of cumulus cells surrounding the oocyte and early embryo, or on granulosa cells, provides an alternative that does not involve sampling from the embryo itself. (wikipedia.org)
  • Profiling of cumulus cells can give valuable information regarding the efficiency of an ovarian hyperstimulation protocol, and may indirectly predict oocyte aneuploidy, embryo development and pregnancy outcomes, without having to perform any invasive procedure directly in the embryo. (wikipedia.org)
  • A US study concluded that donating an embryo is approximately twice as cost-effective as oocyte donation in terms of cost per live birth, with a cost of $22,000 per live delivery compared to $41,000 for oocyte donation. (wikipedia.org)
  • eggs
  • In general, dinosaur eggs are relatively rare, but embryos are even rarer," Reisz said. (nationalgeographic.com)
  • The outcome from using cryopreserved embryos has uniformly been positive with no increase in birth defects or development abnormalities, also between fresh versus frozen eggs used for intracytoplasmic sperm injection (ICSI). (wikipedia.org)
  • in addition, There was a remarkable discovery of fossilized eggs and embryos which are believed to be the oldest metazoan fossils known in the fossil record. (wikipedia.org)
  • deuterostome
  • It is characteristic of deuterostomes - when the original cell in a deuterostome embryo divides, the two resulting cells can be separated, and each one can individually develop into a whole organism. (wikipedia.org)
  • uterus
  • We headed from Maine to Boston, where three embryos were transferred into my uterus. (latimes.com)
  • A new method in development uses the uterus as an incubator and the naturally occurring intrauterine fluids as culture medium by encapsulating the embryos in a permeable intrauterine vessel. (wikipedia.org)
  • Embryo transfer refers to a step in the process of assisted reproduction in which embryos are placed into the uterus of a female with the intent to establish a pregnancy. (wikipedia.org)
  • However, there is limited evidence that supports deposition of embryos in the midportion of the uterus. (wikipedia.org)
  • time-lapse
  • Time-lapse microscopy is an expansion of microscopy wherein the morphology of embryos is studied over time. (wikipedia.org)
  • As of 2014, time-lapse microscopy for embryo quality assessment is emerging from the experimental stage to something with enough evidence for broader clinical use. (wikipedia.org)
  • Studies using the EmbryoScope(tm) time-lapse incubator have used several indicators for embryo quality, such as direct cleavage from 1 to 3 cells, as well as the initiation of compaction and start of blastulation. (wikipedia.org)
  • Time-lapse embryo imaging is an emerging non-invasive embryo selection technique used in reproductive biology. (wikipedia.org)
  • Further trials are needed in order to determine whether time-lapse embryo imaging can impact on outcomes such as live-birth for couples undergoing IVF or ICSI. (wikipedia.org)
  • stages
  • In animals, the development of the zygote into an embryo proceeds through specific recognizable stages of blastula , gastrula , and organogenesis . (wikipedia.org)
  • e.g. one would refer to a chick embryo, not a "chick fetus," even at later stages. (wikipedia.org)
  • epigenetic
  • Because of increased female embryo mortality due to epigenetic modifications induced by extended culture, blastocyst transfer leads to more male births (56.1% male) versus 2 or 3 day transfer (a normal sex ratio of 51.5% male). (wikipedia.org)
  • genetically
  • Changing the time point of genomic analysis to either an earlier-stage polar body analysis or to a later stage by blastocyst biopsy might be a better approach towards selecting genetically normal embryos for transfer," Vanneste says. (technologyreview.com)
  • The advantage of cloning an embryo from a specific patient would be that the stem cells produced would be genetically identical to that person - overcoming problems of immune rejection. (newscientist.com)
  • Others use the terms synonymously because regardless of whether the arrangement is open or anonymous, the donation of embryos and a clinical assisted reproduction procedure is involved, and the recipient couple is preparing to raise a child not genetically related to them. (wikipedia.org)
  • morphological
  • Embryologists have developed morphological parameters that indicate a good or bad prognosis for the developing embryo. (zeiss.com)
  • In current biology, fundamental research in developmental biology and evolutionary developmental biology is no longer driven by morphological comparisons between embryos, but more by molecular biology. (wikipedia.org)
  • Embryo quality is mainly evaluated by microscopy at certain time points using a morphological scoring system. (wikipedia.org)
  • humans
  • These embryos won't work for producing clones humans…they are being used to harvest stem cells. (kottke.org)
  • maturation
  • With respect to the full maturation of an embryo, it is true to say that some "environmental" causes are just as important as "organismal " ones. (jhu.edu)
  • Timing mainly refers to the maturation stage of the embryo before excision. (wikipedia.org)
  • 18th century
  • Embryo rescue was first documented in the 18th century when Charles Bonnet excised Phaseolus and Fagopyrum embryos, planted them in soil and the cross resulted in dwarf plants. (wikipedia.org)
  • woman's
  • What about an alternative like putting the embryos back in the woman's body at a time she's not likely to conceive or holding a ceremony at the time of disposal? (newsweek.com)
  • Culture of embryos can either be performed in an artificial culture medium or in an autologous endometrial coculture (on top of a layer of cells from the woman's own uterine lining). (wikipedia.org)
  • cultured in isolation
  • This is particularly true, for instance, in the case of sexual hybrids between certain cereals, where the hybrid embryo cannot survive unless removed and cultured in isolation. (springer.com)
  • development
  • An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. (wikipedia.org)
  • The structure and development of the rest of the embryo varies by group of plants. (wikipedia.org)
  • The large working distance offers ample space: you can conveniently control the development of the embryos. (zeiss.com)
  • The impressive stereoscopic image helps you to better observe the development of the embryos. (zeiss.com)
  • The ultimate aim of the research will be to harness knowledge gained from understanding the development of embryos, to develop treatments for serious diseases like diabetes. (newscientist.com)
  • The advantages of growing an embryo isolated from the rest of the seed, apart from the intrinsic interest in doing so, are to remove the immature plant from the endosperm and/or cotyledon (s) which may in particular cases prevent or modify the development of the plant. (springer.com)
  • Critics in the late 19th and early 20th centuries, Karl von Baer and Wilhelm His, did not believe that living embryos reproduce the evolutionary process and produced embryo drawings of their own which emphasized the differences in early embryological development. (wikipedia.org)
  • Haeckel's embryo drawings are primarily intended to express his idiosyncratic theory of embryonic development, the Biogenetic Law, which in turn assumes (but is not crucial to) the evolutionary concept of common descent. (wikipedia.org)
  • Haeckel proposes that all classes of vertebrates pass through an evolutionarily conserved "phylotypic" stage of development, a period of reduced phenotypic diversity among higher embryos. (wikipedia.org)
  • The world's first crossbred bovine embryo transfer calf under tropical conditions was produced by such technique on 23 June 1996 by Dr. Binoy S Vettical of Kerala Livestock Development Board, Mattupatti World usage data is hard to come by but it was reported in a study of 23 countries that almost 42,000 frozen human embryo transfers were performed during 2001 in Europe. (wikipedia.org)
  • It results in the developmental fate of the cells being set early in the embryo development. (wikipedia.org)
  • Embryo rescue plays an important role in modern plant breeding, allowing the development of many interspecific and intergeneric food and ornamental plant crop hybrids. (wikipedia.org)
  • Breeding of incompatible interspecific and intergeneric species Overcoming seed dormancy Determination of seed viability Recovery of maternal haploids that develop as a result of chromosome elimination following interspecific hybridization Used in studies on the physiology of seed germination and development Depending on the organ cultured, it may be referred to as either embryo, ovule, or ovary culture. (wikipedia.org)
  • Nevertheless, due to difficulties involved with the rearing of young embryos compared to those that have reached the autotrophic phase of development, embryos are normally allowed to develop in vivo as long as possible. (wikipedia.org)
  • This will generally depend on the stage of development of the embryo. (wikipedia.org)
  • An embryo is an organism early in its development. (wikipedia.org)
  • Artificial embryo culture media basically contain glucose, pyruvate, and energy-providing components, but the addition of amino acids, nucleotides, vitamins, and cholesterol improve the performance of embryonic growth and development. (wikipedia.org)
  • Growth
  • The discovery is unique because it is the first time that scientists have been able to chart a dinosaur's growth from embryo to adulthood. (nationalgeographic.com)
  • Embryos are manually excised and placed immediately onto a culture medium that provides the proper nutrients to support survival and growth (Miyajima 2006). (wikipedia.org)
  • earliest
  • The removal and culture of embryos of higher plants was one of the earliest successful techniques in plant tissue and organ culture. (springer.com)
  • Markuelia fossils from Siberia, and Olivoodes from China are examples of embryos from the earliest Cambrian (541-485.4 million years ago). (wikipedia.org)
  • genetic
  • A study involving higher-resolution genetic screening suggests that healthy embryos may be wasted during IVF. (technologyreview.com)
  • A new study involving higher-resolution genetic screening throws the practice into new doubt by showing that most of the cells in even healthy embryos have such chromosomal defects. (technologyreview.com)
  • To store and dispose of embryos, which are living genetic material, feels like a wanton disregard for the potential for life. (newsweek.com)
  • Cryoconservation of animal genetic resources is a practice in which animal germplasms, such as embryos are collected and stored at low temperatures with the intent of conserving the genetic material. (wikipedia.org)
  • The amount of screening the embryo has already undergone is largely dependent on the genetic parents' own IVF clinic and process. (wikipedia.org)
  • endometrium
  • In the human, the uterine lining (endometrium) needs to be appropriately prepared so that the embryo(s) can implant. (wikipedia.org)
  • Decidua capsularis - Decidua capsularis grows over the embryo on the luminal side, enclosing it into the endometrium. (wikipedia.org)
  • species
  • The position and arrangement of the germ layers are highly species-specific, however, depending on the type of embryo produced. (wikipedia.org)
  • Images of embryos provide a means of comparing embryos of different ages, and species. (wikipedia.org)
  • The temperature and light requirement is generally species specific and thus its usually regulated to be the within the same temperature requirement as that of its parent with embryos of cool-season crops requiring lower temperatures than those of warm-season crops. (wikipedia.org)
  • thaw
  • Only 7 percent of the respondents said they were "very likely" to donate the embryos to another couple trying to conceive and just 6 percent said they were "very likely" to thaw and dispose of the embryos. (newsweek.com)
  • pregnancy
  • A human embryo, seven weeks old or from the ninth week of pregnancy. (wikipedia.org)
  • Embryo quality is the ability of an embryo to perform successfully in terms of conferring a high pregnancy rate and/or resulting in a healthy person. (wikipedia.org)
  • In general, embryo profiling for prediction of pregnancy rates focuses mainly on visual profiles and short-term biomarkers including expression of RNA and proteins, preferably in the surroundings of embryos to avoid any damage to them. (wikipedia.org)
  • The principle behind it is that, since it is known that numerical chromosomal abnormalities explain most of the cases of pregnancy loss, and a large proportion of the human embryos are aneuploid, the selective replacement of euploid embryos should increase the chances of a successful IVF treatment. (wikipedia.org)
  • fertilization
  • Interspecific incompatibility in plants can occur for many reasons, but most often embryo abortion occurs In plant breeding, wide hybridization crosses can result in small shrunken seeds which indicate that fertilization has occurred, however the seed fails to develop. (wikipedia.org)
  • Artificial
  • With artificial culture medium, there can either be the same culture medium throughout the period, or a sequential system can be used, in which the embryo is sequentially placed in different media. (wikipedia.org)
  • The embryos would need to develop in such artificial uteri until a large enough population existed to procreate by natural biological means. (wikipedia.org)
  • donors
  • Embryos are prepared from superovulated female donors, loaded on a straw with medium and glycerol (serving as cryoprotectant) and will be frozen using a regulated freezer to -32 C. Afterwards the straws are plunged into LN2 and can be stored unlimited. (dkfz.de)
  • Re-genotyping makes no sense if non-transgenic females serve as embryo donors. (dkfz.de)
  • If the donors are not available to be screened, the embryos must be given a label that indicates that the required screening has not been done, and the recipients must agree to accept the associated risk. (wikipedia.org)
  • early
  • In animals, the zygote divides repeatedly to form a ball of cells, which then forms a set of tissue layers that migrate and fold to form an early embryo. (wikipedia.org)
  • Late 20th and early 21st century critic Stephen Jay Gould have objected to the continued use of Haeckel's embryo drawings in textbooks. (wikipedia.org)
  • The series of twenty-four embryos from the early editions of Haeckel's Anthropogenie remain the most famous. (wikipedia.org)
  • Each blastomere produced by early embryonic cleavage does not have the capacity to develop into a complete embryo. (wikipedia.org)
  • donation
  • Embryo donation is a form of third party reproduction. (wikipedia.org)
  • Embryo donation can be handled on an anonymous basis (donor and recipient parties are not known to each other), or on an open basis (parties' identities are shared and the families agree to a relationship). (wikipedia.org)
  • Some writers use the term "embryo donation" to refer strictly to anonymous embryo donation, and "embryo adoption" to refer to the open process. (wikipedia.org)
  • Thus what was called gamete and embryo donation, came into being. (wikipedia.org)
  • A careful reading of the 1983 clinical report often cited as the first instance of embryo donation reveals that the donated embryo was actually created for the recipient at the same time that four embryos were made for the donor couple's own use. (wikipedia.org)
  • depends
  • Like every proposal for interstellar colonization, embryo space colonization depends on solutions to still-unsolved technological problems. (wikipedia.org)