Transplanting and deep-freezing cows' eggs.
D000818:Animals; D002417:Cattle; D004477:Ectogenesis; D010064:Embryo Implantation; D005260:Female; D005615:Freezing; D007315:Insemination, Artificial; D010060:Ovulation; D010063:Ovum; D011247:Pregnancy; D012756:Sheep