title: Fertilization in vitro of rat eggs as affected by the maturity of the females and the sperm concentration.
mesh_terms: D000367:Age Factors; D000818:Animals; D002452:Cell Count; D006063:Chorionic Gonadotropin / Q000494:pharmacology; D004822:Epididymis; D005260:Female; D005306:Fertilization; D006064:Gonadotropins, Equine / Q000494:pharmacology; D066298:In Vitro Techniques; D008297:Male; D010060:Ovulation / Q000187:drug effects; D010063:Ovum; D051381:Rats; D013094:Spermatozoa; D013268:Stimulation, Chemical
chemical_list: D006063:Chorionic Gonadotropin; D006064:Gonadotropins, Equine