| 单词 | embryonic cell |
| 例句 | “It’s good for tracking the cells so you can distinguish the cells that you injected in the embryo from the embryonic cells,” Wu says. Why Does This Hybrid Monkey Glow Green? 2023-11-10T05:00:00Z Half clones are produced when embryonic cells split in half before multiplying. Crocodile’s ‘Virgin Birth’ Is a First for Science’s History Books 2023-06-09T04:00:00Z It was long assumed that when these embryonic cells lose their pluripotency, that versatility is gone forever. Synthetic Morphology Lets Scientists Create New Life-Forms 2023-05-31T04:00:00Z This means that even at this early stage, the developmental fate of each embryonic cell is already determined. Fundamentals of Biology 2015-01-01T00:00:00Z The updated regulations cover all research institutions and everything relating to humans, including work on tissues, organs and embryonic cells. China's new human gene-editing rules worry experts 2023-03-06T05:00:00Z Finally, the team compared the effect of both versions of the gene in brain organoids made of human embryonic cells floating in petri dishes. ‘Breakthrough’ finding shows how modern humans grow more brain cells than Neanderthals 2022-09-07T04:00:00Z Recent studies show that the same groups of embryonic cells develop in the same order in vertebrates to produce many homologous tissues and organs. Miller & Levine Biology 2018-01-01T00:00:00Z Levin, Vaibhav Pai of Tufts and their colleagues have shown that the development of neural structures in the frog brain seems to be governed by the voltage across the membranes of embryonic cells. Synthetic Morphology Lets Scientists Create New Life-Forms 2023-05-31T04:00:00Z The embryonic cells that develop from totipotent stem cells and are precursors to the fundamental tissue layers of the embryo are classified as pluripotent. Anatomy and Physiology 2013-06-19T00:00:00Z Ultrasounds can now detect cardiac activity in embryonic cells that will eventually become the heart as early as six weeks into a pregnancy, before many women realize they’re pregnant. Georgia bill would ban abortion pills by mail, require exams 2022-01-25T05:00:00Z No new embryonic cell lines were made for the research. Scientists use stem cells to create models of pre-embryos 2021-12-02T05:00:00Z When Brian Piccolo died of embryonic cell carcinoma at 26 in June 1970, he left behind a wife and three little girls. Perspective | ‘Together again’: Brian Piccolo’s daughter remembers Gale Sayers 2020-09-24T04:00:00Z But that November Piccolo was found to have embryonic cell carcinoma of the lungs. Gale Sayers Dies; Elusive Hall of Fame Running Back Was 77 2020-09-23T04:00:00Z As explained in a later chapter, each of these lineages of embryonic cells forms the distinct germ layers from which all the tissues and organs of the human body eventually form. Anatomy and Physiology 2013-06-19T00:00:00Z A similarly comprehensive profiling of larval and embryonic cell types in vertebrates and cephalochordates would not currently be feasible. A deep dive into the development of sea squirts 2019-07-09T04:00:00Z But, she said, it’s problematic that embryonic cell lines remain the standard in science. Scientists use stem cells to create models of pre-embryos 2021-12-02T05:00:00Z Confirming previous work, they showed that even in the first embryonic cell, genetic information started picking sides. It’s a Lefty! Welcome to the World’s First Crispr Snail Baby 2019-05-24T04:00:00Z Amniotic-stem-cell products are made solely from tissues related to childbirth, not from embryonic cells. The Birth-Tissue Profiteers 2019-05-07T04:00:00Z This results in partial genome replication and the accumulation of DNA damage, which lead to genome instability in placental and embryonic cells in mice. Unstable genomes promote inflammation 2019-02-19T05:00:00Z They identified 35 types of cells, some new and some already known, including various embryonic cells that invade the mother’s tissue and help trigger the formation of blood vessel connections between mother and fetus. Immune system ‘negotiations’ stop mom’s body from attacking her fetus 2018-11-14T05:00:00Z That method was too harsh for the delicate embryonic cells of a mouse. Watch This Blob of Cells Become an Embryo in High-Resolution 2018-10-12T04:00:00Z As those new mutations occurred, the embryonic cells passed them all down to their descendants, a mosaic legacy. Every Cell in Your Body Has the Same DNA. Except It Doesn’t. 2018-05-21T04:00:00Z Like blastocysts, blastoids form from inductive signals that originate from the inner embryonic cells and drive the development of the outer trophectoderm. Blastocyst-like structures generated solely from stem cells 2018-05-01T04:00:00Z As embryonic cells differentiate into skin, muscle, and other tissues, their DNA gets spooled, bunched up, and tagged so that only specific genes are expressed within any given cell type. Monkey Clones Created in the Lab. Now What? 2018-01-24T05:00:00Z The fact teeth and sharks' denticle scales both arise from the same kind of embryonic cell suggests a common evolutionary origin, the team reported in the journal Proceedings of the National Academy of Sciences. Human teeth origin 'link to fish scales' 2017-11-20T05:00:00Z To understand why embryonic cells make viral proteins, scientists have run experiments to see what happens when viral genes are silenced. Ancient Viruses Are Buried in Your DNA 2017-10-04T04:00:00Z The fact that this research uses iPS cells rather human embryonic stem cells means the treatment would be acceptable in countries such as Ireland and much of Latin America, where embryonic cells are banned. Human Stem Cells Fight Parkinson's Disease in Monkeys 2017-08-31T04:00:00Z Strikingly, the off-target testing did not detect any mutations in the sequencing results from the embryonic cells, leading the authors to conclude that the targeting was accurate. Biotechnology: At the heart of gene edits in human embryos : Nature : Nature Research 2017-08-01T04:00:00Z The embryonic cells develop into three types, called germ layers. A New Form of Stem-Cell Engineering Raises Ethical Questions 2017-03-21T04:00:00Z One challenge is that the pig pregnancy lasts about 112 days, compared to nine months in humans, meaning that the embryonic cells are developing at completely different rates. First human-pig 'chimera' created in milestone study 2017-01-26T05:00:00Z Carried out by an embryonic cell of extremists that later evolved into Hezbollah, it blew off the front of the embassy, leaving it like a seven-story, open-faced dollhouse. Trump’s Vainglorious Affront to the C.I.A. 2017-01-22T05:00:00Z Guarente said it was more likely that the Yamanaka genes were not erasing the epigenomic marks directly, but rather were activating the genes responsible for the immense health and vitality of embryonic cells. Scientists say clock of aging may be reversible 2016-12-15T05:00:00Z US President George W. Bush prohibits federal funds being used to start new human embryonic cell lines or to conduct research on newly derived cell lines. Timeline: Regrowing the body : Nature : Nature Research 2016-12-06T05:00:00Z Samples of those embryonic cells were then grown in the laboratory. 'It is time to make' three-person babies - BBC News 2016-11-30T05:00:00Z They found a surprising biological link between the fin and the human hand, in the form of genes that tell a clump of embryonic cells to end up at the far end of an appendage. Louisiana, U.S. Presidential Race, Ryan Lochte: Your Wednesday Evening Briefing 2016-08-17T04:00:00Z Lawmakers who believed life begins at conception were opposed to embryonic cells being created and destroyed, but some scientists countered that cloning and growing these cells could lead to replacing damaged tissue or organ cells. What Ever Happened to Cloning? 2016-08-04T04:00:00Z Would the adult cell revert to an original state and turn into an embryonic cell? The Science of Identity and Difference 2016-05-02T04:00:00Z Research involving early human tissue is generally divided between embryonic cells, which develop in the first month of gestation, and fetal tissue, which develops later. House Seeks Names of Fetal Tissue Researchers, Prompting Claims of Intimidation 2016-03-24T04:00:00Z These studies have documented how embryonic cells make certain proteins at certain times. Reverse Engineering Birds’ Beaks Into Dinosaur Bones 2015-05-12T04:00:00Z During this window, the viruses alter embryonic cells in some potentially important ways. Ancient Viruses, Once Foes, May Now Serve as Friends 2015-04-23T04:00:00Z Scientists suspect that the diaphragm evolved through some change in the way mammal embryos develop: Mutations caused certain embryonic cells to grow into an entirely new muscle. Behind Each Breath, an Underappreciated Muscle 2015-04-02T04:00:00Z Although TRO did not fall within any clusters, it shared the highest degree of similarity with the early embryonic cell lines. Integrative analysis of haplotype-resolved epigenomes across human tissues : Nature : Nature Publishing Group 2015-02-17T05:00:00Z The embryonic cells of Lebanon’s Hezbollah initiated suicide bombings with attacks on American and Israeli targets in the early 1980s. A Short History of Islamism Mitalipov, who also contributed to the Cell Stem Cell paper, maintains that nuclear transfer creates more stable cells that more closely resemble embryonic cells. Stem cell recipes go head to head 2014-11-07T05:00:00Z Joanna Wysocka, a developmental biologist at Stanford University, and her colleagues recently discovered evidence that embryonic cells are not turning to their viral genes by accident. Ancient Viruses, Once Foes, May Now Serve as Friends 2015-04-23T04:00:00Z The scientists argue that there’s only way to explain these strange results: The mother became a mosaic when she was a tiny clump of embryonic cells. Having More Than One Set of DNA Carries Legacy of Risk 2014-07-31T04:00:00Z Although TRO did not fall within any clusters, it shared the highest degree of similarity with the early embryonic cell lines. Integrative analysis of haplotype-resolved epigenomes across human tissues : Nature : Nature Publishing Group 2015-02-17T05:00:00Z Therapeutic cloning means producing embryonic cells genetically identical to a donor, usually for the purpose of treating disease. Scientists Report Advance in ‘therapeutic Cloning’ 2014-04-18T02:44:54Z For in vitro stimulation, lymph node embryonic cells were collected as previously described. Maternal retinoids control type 3 innate lymphoid cells and set the offspring immunity 2014-04-04T18:28:57.531Z Or are these just biochemical accidents — embryonic cells mistakenly turning viral genes into RNA, then destroying their molecular mistakes? Ancient Viruses, Once Foes, May Now Serve as Friends 2015-04-23T04:00:00Z The monoallelic expression appeared random and dynamic because there was considerable variation among closely related embryonic cells. [Report] Single-Cell RNA-Seq Reveals Dynamic, Random Monoallelic Gene Expression in Mammalian Cells 2014-01-09T18:56:54.368Z While there were no aborted embryonic cells reportedly used in any of the products, aborted cells were used in the development of artificial flavor enhancers by biotech company Senomyx for research and development. A turf war between Coke and Pepsi shows that neither is the “good” company 2013-09-18T12:42:00Z To test this principle, he added high concentrations of Bmp4 to embryonic cells. Stem cells: Egg engineers 2013-08-21T17:50:20.380Z Seeing red For the latest technique, the researchers used a nanowire to inject diamond crystals into a human embryonic cell. Nanothermometer Takes the Temperature of Living Cells 2013-08-01T16:45:00.740Z Dr. Wysocka and her colleagues found that when HERV-K reawakens, the embryonic cell builds proteins on its surface that help ward off other viruses that may be trying to get inside. Ancient Viruses, Once Foes, May Now Serve as Friends 2015-04-23T04:00:00Z Dr. Burdine, at Princeton, studies how Nodal shapes the anatomy of the zebra fish heart as embryonic cells migrate around the organ. Growing Left, Growing Right – How a Body Breaks Symmetry 2013-06-03T19:41:55Z They can then grow them in a culture much the way they do embryonic cells, but without the religious or ethical controversy. Researchers Home in on Biological Ways to Restore Hearing [Excerpt] 2013-02-15T11:15:03.257Z He realized how easy it was to watch their translucent embryonic cells divide and, over the course of just a few days, develop into organs and limbs. Mapping brain networks: Fish-bowl neuroscience 2013-01-23T18:20:53.800Z And fourth, lincRNAs containing one particular type of endogenous retrovirus are especially active in pluripotent stem cells, the embryonic cells that are the precursors of all other cell types. RNA-only genes: The origin of species? 2012-11-29T17:39:56Z This controversy, indeed, was what had originally stimulated Dr Yamanaka to start his investigations, in the hope that embryonic cells might no longer be needed. The 2012 Nobel prizes: Good eggs 2012-10-11T15:07:28Z These “induced” embryonic cells behave much like the ethically contentious stem cells gleaned from human embryos. Nobel Prize for medicine awarded to Gurdon, Yamanaka for stem cell discoveries 2012-10-08T12:43:00Z Basically, the primitive cells were the equivalent of embryonic stem cells, which had been embroiled in controversy because to get human embryonic cells, human embryos had to be destroyed. Gurdon, Yamanaka win Nobel medicine prize 2012-10-08T10:28:08Z The work helped to establish the default model of neural induction: the idea that, without other signals, embryonic cells will follow an internal program to become neural cells. Tissue engineering: The brainmaker 2012-08-22T17:20:37.893Z Lagrange describes in a chronic ulcer of the palm, a layer about 2 mm. in thickness of embryonic cells closely packed with an amorphous intercellular substance. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z To verify that these pre-eye cells were electrically different from the surrounding embryonic cells, Levin's team used a dye that fluoresces brighter the more negative charge there is in a cell. My, Your Eyes Are So Electric 2011-12-07T19:38:32Z But the field has been controversial because creation of the embryonic cells usually involves the destruction of human embryos. Geron Is Shutting Down Its Stem Cell Clinical Trial 2011-11-15T02:03:16Z Moreover, the process is too inefficient for therapeutic use — 63 oocytes were required to generate one normal set of embryonic cells. Stem Cell Research Shows Promise 2011-10-06T02:03:22Z The cells lying at the wounded spot begin to bud, producing a layer or lump, the cells of which resemble embryonic cells. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z The external fibrous layers were at points abundantly interspersed with, and even replaced by, groups of embryonic cells, the active proliferation of which meant the destruction of the perivascular fibrous layer. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The number of chromosomes was determined by their preparation from nuclei of embryonic cells. Using the Acropora digitifera genome to understand coral responses to environmental change 2011-08-17T17:22:15.917Z In the trial, nervous system cells derived from embryonic cells were injected into people with severe spinal cord injury. Geron Is Shutting Down Its Stem Cell Clinical Trial 2011-11-15T02:03:16Z At first they seemed identical, as hoped, to the embryonic cells made with the oocyte method. Stem Cell Research Shows Promise 2011-10-06T02:03:22Z Adult stem cell therapy is different from using embryonic cells, which Perry opposes. Doctor?s used adult stem cells in Gov. Rick Perry?s back surgery 2011-08-04T21:14:35Z Until now, however, scientists have not been able to get these cells to proliferate as readily as they can embryonic cells. When Will Scientists Grow Meat in a Petri Dish? 2011-05-17T12:15:00.257Z A decade ago, the administration of President George W. Bush limited federal funding for research to certain embryonic cell lines. 2nd Chicago patient in stem cell trial 2011-05-11T01:15:00Z It has turned the embryonic cells into retinal cells, and these have been implanted into the eyes of two people suffering from two different forms of macular degeneration, a condition that can cause blindness. Geron Is Shutting Down Its Stem Cell Clinical Trial 2011-11-15T02:03:16Z By using private money, scientists said, the experiment avoids the political battles over federally financed research that involves the embryonic cells. Chicago News Cooperative: Stem Cell Research Skirts Hurdles, but Raises Ethics Issues, Too 2010-10-22T00:26:00Z Daley and other researchers also work with human embryonic stem cells and said using iPS cells was not an alternative to the controversial embryonic cells. U.S. researchers make stem cells quickly from skin 2010-09-30T19:25:00Z Reprogramming is supposed to wipe a cell’s molecular slate clean, but clearly something was preventing the cells from being as flexible as the embryonic cells they are supposed to resemble. Stuck in the Past 2010-07-20T14:53:00Z The N.I.H. will now pay for research using embryonic cells, although it will not pay for the actual process of making the cells. | Washington: Suit on Stem Cell Policy to Proceed 2010-06-26T03:36:00Z It consists of a non-nucleated crystalline cone developed from embryonic cells, and is enveloped in three tiers of large nucleated cells. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The trials mark a milestone in the controversial quest to determine whether embryonic cells can be reprogrammed to repair injured or diseased tissue and organs. Chicago News Cooperative: Stem Cell Research Skirts Hurdles, but Raises Ethics Issues, Too 2010-10-22T00:26:00Z Imaginal buds, cells, or discs: in forms with a complete metamorphosis are those embryonic cells around and from which the organs and appendages of the future imago develop. Explanation of Terms Used in Entomology "The charts showed the changes to be made in the embryonic cells, but they could not show the method whereby the changes are made," replied Qril. Rebels of the Red Planet These rests are supposed to be undifferentiated embryonic cells which remain embedded amongst fully formed tissue elements, and lie dormant until they are excited into active growth and give rise to a tumour. Manual of Surgery Volume First: General Surgery. Sixth Edition. View of the cleavage of the egg during the first formation of embryonic cells. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Some researchers sidestep this controversy by working with adult stem cells — culled from skin, for example — although those cells have not yet proved to be as versatile as embryonic cells in experiments. Chicago News Cooperative: Stem Cell Research Skirts Hurdles, but Raises Ethics Issues, Too 2010-10-22T00:26:00Z Driesch maintains, therefore, that the goal of development in any embryonic cell is determined not by structure or nutriment but by position. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 Other cells, which may be closely associated into a continuous organ, or more or less surrounded by tissue-cells, whose part it is to nourish them, are called “secondary embryonic cells,” or “germ-cells.” Unconscious Memory |
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