Effect of intra-uterine plastic spirals and HCG on the corpus luteum of the ewe.
D000818:Animals; D006063:Chorionic Gonadotropin / Q000494:pharmacology*; D003338:Corpus Luteum / Q000187:drug effects / Q000502:physiology*; D004971:Estrus; D005260:Female; D007434:Intrauterine Devices; D009929:Organ Size; D010969:Plastics; D011247:Pregnancy; D012756:Sheep; D014599:Uterus / Q000601:surgery
D006063:Chorionic Gonadotropin; D010969:Plastics