blastoderm वाक्य
उदाहरण वाक्य
मोबाइल
- On the night of the first meeting, Huxley jokingly proposed that the club be named " Blastodermic Club ", in reference to blastoderm, a layer of unorthodox opinion ", was also rejected as a possible name.
- This expression pattern is initiated by the pair-rule genes ( like " even-skipped " ) that code for transcription factors that regulate the " engrailed " gene's transcription in the syncytial blastoderm.
- The final two layers of the embryoblast are known collectively as the "'bilaminar embryonic disc "'as well as the "'bilaminar blastocyst "'or "'bilaminar blastoderm " '.
- Koller's sickle, which is a local thickening of epiblast involved in the formation of the primitive streak through which gastrulation occurs, separates sheets of cells from the posterior end of the blastoderm from the underlying hypoderm and area opaca endoderm.
- He and his colleagues hope that some virus reaches primordial cells in the blastoderm which develop into sperm and eggs, so the gene for the protein can be passed down to future generations of chickens, rather than having to repeat the injection in each generation.
- After thirteen mitotic divisions and about 4 hours after fertilization, an estimated 6, 000 nuclei accumulate in the unseparated cytoplasm of the oocyte before they migrate to the surface and are encompassed by plasma membranes to form cells surrounding the yolk sac producing a cellular blastoderm.
- Callebaut and Van Nueten were able to determine that the differentiation of Koller'sickle cells to sickle endoblast is irreversible, and that the sickle endoblast induces early neurulation; they did this by implanting Koller's sickle tissue into different parts of unincubated chicken blastoderms and observing the effects.
- Studies on Fundulus demonstrated that the YSL is capable of undergoing epiboly even when the blastoderm has been removed, but that the blastoderm cannot undergo epiboly in the absence of the YSL . In zebrafish, there is a microtubule array in the yolk that extends from the animal to the vegetal pole of the embryo, and that contracts as epiboly progresses.
- Studies on Fundulus demonstrated that the YSL is capable of undergoing epiboly even when the blastoderm has been removed, but that the blastoderm cannot undergo epiboly in the absence of the YSL . In zebrafish, there is a microtubule array in the yolk that extends from the animal to the vegetal pole of the embryo, and that contracts as epiboly progresses.
- At this point the zebrafish embryo contains three portions, an epithelial monolayer known as the enveloping layer ( EVL ), a yolk syncytial layer ( YSL ) which is a membrane-enclosed group of nuclei that lie on top of the yolk cell, and the deep cells ( DEL ) of the blastoderm which will eventually form the embryo's three germ layers ( ectoderm, mesoderm, and endoderm ).
- McGoggin becomes intolerable to the men who have been in India longer than he has . " christened him the'Blastoderm', and throw cushions at him in the Club : His superior says that " for a clever boy, Aurelian was a very big idiot . " He works well, and hard-too hard, for he suffers an attack of aphasia-a mental breakdown, which deprives him speech.
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