noun
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
developing
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This hormone is produced by the developing embryo within a few days of the egg being fertilised.
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There won't be a brain being wired up in the first place, unless there is a complete developing embryo .
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Chicken eggs are large because of the yolk which acts as a source of nutrients for the growth of the developing embryo .
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Genes only start to mean something when they are translated, via protein synthesis, into growing-rules for a developing embryo .
early
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Surprisingly, cells that will form the gut are on the outside surface of many early embryos .
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The number of cell divisions in the early embryo that are controlled by the cytoplasm varies from species to species.
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It could, for example, challenge the absolute opposition by anti-abortionists to research on human eggs or early embryos .
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A quite different way of creating a chimaera is to fuse two early mouse embryos .
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The simplest two-instrument cell injection technique for both primitive streak stage and for early somite stage embryos will be described.
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Among other things, imprinting is known to take place during gamete formation, whereas differentiation takes place in the early embryo .
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But does regulation continue throughout development, or is it just a property of the early embryo ?
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It is possible to label the cells of the early embryo and follow what they do during development.
human
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He observed that his ears, made almost transparent by the sunlight, closely resembled a pair of human embryos .
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Those scenes now include everything from human embryos , eclipses, insects and seed pods to comets, hands and candles.
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Six years ago Congress banned assistance for any form of research that involved creating or destroying human embryos .
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Was it overlooked because it demonstrates that insights into genetic disorders can be gained without use of human embryos ?
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The growth of the human embryo recapitulated the history of animal life as revealed by the fossil record.
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Both sides come together in their opposition to the cloning of human embryos , and object to commercial control over the process.
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In the near future however scientists will be able to graft new genes into human eggs and embryos .
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In 1828 von Baer showed that the human embryo never passes through a stage equivalent to an adult fish or reptile.
new
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Instead, he had simply made new embryos by nuclear transfer.
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In mammals, the cytoplasm controls only a few divisions, and then the genes of the new embryo take over.
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It was as if the graft was setting up a whole new embryo and re-specifying the positions of the cells in its vicinity.
normal
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Further studies are directed towards the understanding of the role which the stem cell control factor DIA/LIF plays in the normal embryo .
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Control injections with preimmune serum produced normal embryos .
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Even the early sea-urchin embryo can be separated into single cells and will reform a more or less normal embryo.
old
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The fetal membranes from older embryos are also best handled initially as solid tissue because of difficulties in their mechanical disaggregation.
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For older embryos , 100% serum is advisable.
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A typical half embryo was seen to emerge just as if an older embryo had been sliced in two with a razor.
young
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But it is also possible to split young embryos artificially, and again produce whole animals from the individual cells.
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In our experiments with Megan and Morag and Dolly, we placed two young embryos into each receiving ewe.
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Driesch and the early Spemann created clones merely by splitting very young embryos , to give identical twins or quads.
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The cell cycle at conception and in young embryos A new life begins with the fusion of sperm and egg.
■ NOUN
cell
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So now they fused karyoplasts taken from two-#cell embryos with enucleated zygotes.
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He produced bigger clones by embryo splitting, once deriving a set of quin lambs from an eight-#cell embryo.
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Is it possible, they asked, that nuclei from two-#cell embryo are simply less robust than nuclei from zygotes?
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This appears very early in development, when it is involved in compaction of the eight cell embryo and cell polarisation.
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What would happen if they transferred nuclei from two-#cell embryos into enucleated cytoplasts taken from two-cell embryos?
chick
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When researchers tried to mimic the results on other animals, such as chick embryos , it did not have the same effect.
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The chick embryo proper comes from a very small region resting on the yolk and which is equivalent to the mammalian egg.
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She noticed that the nuclei of the cells of the quail embryo looked slightly different from those of the chick embryo.
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Because transplanted quail cells will behave normally in chick embryos , she realized she had an invaluable natural marker.
mouse
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It is quite convenient to simplify the problem, and instead of thinking about sea-urchin or mouse embryos , to think about flags.
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A quite different way of creating a chimaera is to fuse two early mouse embryos .
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Two cell lineage markers have been applied recently to the pre-implantation mouse embryo .
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It is possible to rearrange the cells of the early mouse embryo in numerous combinations and normal development will still occur.
research
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To say this is not to belittle the sincere concern shown by many religious people in the debate over embryo research .
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Among recent subjects have been council house sales, public attitudes to embryo research and the effects of unemployment on young women.
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Precious quality Whether the timing of this programme was influenced by the current debate on embryo research , I do not know.
■ VERB
create
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Six years ago Congress banned assistance for any form of research that involved creating or destroying human embryos .
develop
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Each of the two blastomeres developed into a whole embryo .
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Like all animals we come from one cell that develops into an embryo which forms the adult.
form
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When first formed the embryo is only half a millimetre long, and bears no resemblance to its future form.
freeze
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The new research should also help to avoid freezing and storing excess embryos , she says.
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Remember the Barbasol can full of frozen embryos , lost in the rainy mire?
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Animals are preserved as frozen embryos or as sperm freeze-dried to a powder and brought back to life.
implant
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They will choose a shortlist of 200, who will be implanted with 10 cloned embryos .
produce
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This hormone is produced by the developing embryo within a few days of the egg being fertilised.
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We also produced some embryos when their cells were in G2 by use of yet another agent, cycloheximide.
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The unfertilised egg cell began to divide to produce embryos that sometimes developed well.
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In fact, the remaining cell did produce only half an embryo , so it seemed that Weismann was right again.
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He then shook four-cell urchin embryos apart, and produced four complete embryos.
transfer
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Nuclei could be successfully transferred between embryos that were in the same developmental domain, but not between embryos in different domains.
EXAMPLES FROM OTHER ENTRIES
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The government has banned all scientific research using human embryos.
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When first formed, the embryo is only half a millimetre long.
EXAMPLES FROM CORPUS
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In fact, the remaining cell did produce only half an embryo , so it seemed that Weismann was right again.
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Now that scientists have access to human embryos, the question of genetic engineering arises.
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This appears very early in development, when it is involved in compaction of the eight cell embryo and cell polarisation.
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This problem is also seen with embryos produced by other technologies that require embryos to be cultured in test tubes before implantation.
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This would explain why they are less able to support development in the embryos that are derived from them.
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Wherever possible such parameters should be compared with those of embryos of the same age recovered in vivo.