Development of the zona pellucida in the rat.
D000367:Age Factors; D000818:Animals; D002454:Cell Differentiation; D002923:Cilia; D003594:Cytoplasmic Granules; D004721:Endoplasmic Reticulum; D005260:Female; D008854:Microscopy, Electron; D006080:Ovarian Follicle / Q000166:cytology; D010063:Ovum / Q000166:cytology*; D051381:Rats; D011919:Rats, Inbred Strains