title: The occurrence of early embryonic death in the mare in relation to natural service and artificial insemination with fresh or deep-frozen semen.
mesh_terms: D000818:Animals; D005260:Female; D005313:Fetal Death / Q000209:etiology / Q000662:veterinary*; D005615:Freezing; D006736:Horses; D007315:Insemination, Artificial / Q000662:veterinary*; D011247:Pregnancy; D012098:Reproduction; D012661:Semen