title: Hammond Memorial Lecture. The magic of Hammond.
mesh_terms: D000383:Agriculture / Q000266:history; D000818:Animals; D001315:Australia; D001947:Breeding; D002369:Castration; D004958:Estradiol / Q000502:physiology; D004971:Estrus; D005260:Female; D049673:History, 20th Century; D011247:Pregnancy; D011374:Progesterone / Q000502:physiology; D012098:Reproduction; D012621:Seasons; D012756:Sheep / Q000502:physiology*; D013739:Testosterone / Q000502:physiology
chemical_list: D013739:Testosterone; D011374:Progesterone; D004958:Estradiol