title: Effect of age and of follicular aging on the preovulatory oocyte.
mesh_terms: D000375:Aging; D000818:Animals; D002466:Cell Nucleolus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D066298:In Vitro Techniques; D009685:Nuclear Envelope / Q000648:ultrastructure; D009865:Oocytes / Q000254:growth & development* / Q000648:ultrastructure; D010063:Ovum / Q000254:growth & development*; D011247:Pregnancy; D011359:Proestrus; D051381:Rats; D015044:Zona Pellucida / Q000648:ultrastructure