Chorion (egg)
From Wikipedia, the free encyclopedia
The chorion is the outermost membrane around the embryo in mammals, birds and reptiles. It develops from an outer fold on the surface of the yolk sac.[1] In insects, the chorion is the outer shell of the insect egg[1], which lies outside the vitteline envelope and is developed by the follicle cells while the egg is in the ovary.[2]
[edit] See also
[edit] Footnotes
- ^ a b Entry of 'chorion' in the Encyclopædia Britannica website [1]. Retrieved on 26 Sep 2009.
- ^ Chapman, R.F. (1998) "The insects: structure and function", Section The egg and embryology. Previewed in Google Books [2] on 26 Sep 2009.
[edit] References
- Chapman, R.F. (1998) The insects: structure and function. (4th Ed). Cambridge University Press. ISBN 0521578906, ISBN 9780521578905.
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