Definition: the primordial cell layers on the yolk surface of a telolecithal egg; in the earliest stages they consist of protoderm; they later differentiate into ectoderm, endoderm, and mesoderm.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.