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Yolk sac

yolk sac

(Science: embryology, ornithology) One of the set of extra embryonic membranes, growing out from the gut over the yolk surface, in birds formed from the splanchnopleure, an outer layer of splanchnic mesoderm and an inner layer of endoderm.


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Stem Cells

... which makes an animal immune to a X pathogen, can both be injected into yolk sac or bone marrow. If the tumor developed and animal is protected against infection upon exposure ...

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by Shaanu
Thu May 09, 2013 3:00 pm
 
Forum: Molecular Biology
Topic: Stem Cells
Replies: 0
Views: 957

Stem Cells

... which makes an animal immune to a X pathogen, can both be injected into yolk sac or bone marrow. If the tumor developed and animal is protected against infection upon exposure ...

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by Shaanu
Thu May 09, 2013 9:45 am
 
Forum: Genetics
Topic: Stem Cells
Replies: 4
Views: 2648

Extraembryonic Membranes

does anyone know exactly how the four membranes amnion yolk sac chorion, and allantois work to protect the embryo and egg?

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by vlc1500
Wed Mar 07, 2007 1:32 am
 
Forum: Zoology Discussion
Topic: Extraembryonic Membranes
Replies: 6
Views: 8785

Extraembryonic Membranes

... reptiles, birds, and mammals produce 4 extraembryonic membranes: amnion yolk sac chorion, and allantois With these four membranes, the developing embryo is able to carry ...

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by dipjyoti
Sun Feb 18, 2007 11:05 am
 
Forum: Zoology Discussion
Topic: Extraembryonic Membranes
Replies: 6
Views: 8785

The Fiber Disease

... studies on fish it has been shown that the early life stages (embryo, yolk sac-fry and juveniles) are the most sensitive to the impacts of toxicants (McKim, 1977, 1985; ...

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by Nadas Moksha
Sat Nov 04, 2006 7:00 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4989201


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