title: Ultrastructural evolution of the corona radiata follicular cells.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005260:Female; D008854:Microscopy, Electron; D006080:Ovarian Follicle / Q000648:ultrastructure*; D010060:Ovulation; D010063:Ovum / Q000648:ultrastructure; D051381:Rats