title: Direct evidence of retention of unfertilized ova in the oviduct of the mare.
mesh_terms: D000818:Animals; D003338:Corpus Luteum / Q000502:physiology; D004971:Estrus; D005187:Fallopian Tubes / Q000502:physiology*; D005260:Female; D005306:Fertilization; D007987:Gonadotropin-Releasing Hormone / Q000494:pharmacology; D006064:Gonadotropins, Equine / Q000494:pharmacology; D006736:Horses / Q000502:physiology*; D008297:Male; D010060:Ovulation; D010063:Ovum / Q000502:physiology*; D011247:Pregnancy; D013094:Spermatozoa / Q000502:physiology
chemical_list: D006064:Gonadotropins, Equine; D007987:Gonadotropin-Releasing Hormone