Vitelline envelope
The vitelline envelope is the outer proteinaceous layer outside the oocyte in an insect egg. The vitelline envelope, not being a cellular structure, is not referred to as a membrane. It varies in thickness for different insects and even varies at different parts of the egg. It lies inside the outer shell of the egg which is commonly referred to as the chorion.[1]
Footnotes
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gollark: ?emojistats
References
- Chapman, R.F. (1998) The insects: structure and function. (4th Ed). Cambridge University Press. ISBN 0-521-57890-6, ISBN 978-0-521-57890-5.
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