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gastrulation

Pronunciation: gas′trū-lā′shŭn
Transformation of the blastula or blastocyst into the gastrula; the development and invagination of the embryonic germ layers. In human embryos, gastrulation is the process by which the bilaminar embryonic disk is converted into a trilaminar embryonic disk.

 

 

 

 

 

 

 

 

 

 

 

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