title: Induction of superovulation in DD mice at different stages of the oestrous cycle.
abstract: This study examined the developmental capacity of oocytes in DD mice after they had been injected with pregnant mares' serum gonadotrophin at different stages of the oestrous cycle. The superovulation of mature DD mice at pro-oestrus, oestrus and metoestrus resulted in a large yield of viable embryos. The proportion of abnormal embryos was highest after injection of pregnant mares' serum gonadotrophin at dioestrus. The pool of viable oocytes was most synchronized with normal development after the hormone was injected at oestrus. The results demonstrate that oocytes of different morphology could be induced to ovulate. The developmental capacity of oocytes of different morphology is discussed.
authors.affiliation: Institute of Cytology and Genetics of the Russian Academy of Sciences, Novosibirsk.
authors.forename: O E
authors.initials: OE
authors.lastname: Redina
authors.lastname: Amstislavsky SYa
authors.forename: L F
authors.initials: LF
authors.lastname: Maksimovsky
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D004971:Estrus; D005260:Female; D006064:Gonadotropins, Equine / Q000494:pharmacology; D051379:Mice; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D008813:Mice, Inbred ICR; D008815:Mice, Inbred Strains; D009865:Oocytes / Q000166:cytology; D010062:Ovulation Induction / Q000379:methods*; D013045:Species Specificity; D013480:Superovulation
chemical_list: D006064:Gonadotropins, Equine