[Some experimental studies on the fertilized ova before implantation in the aged rats (author's transl)].
D000375:Aging; D000818:Animals; D004971:Estrus; D005260:Female; D005306:Fertilization; D010060:Ovulation; D010063:Ovum / Q000473:pathology* / Q000637:transplantation; D011123:Polyploidy; D011247:Pregnancy; D051381:Rats; D014184:Transplantation, Homologous