Hormonal control of the oestrus cycle in the bitch.
D000818:Animals; D003276:Contraceptives, Oral / Q000008:administration & dosage; D004285:Dogs; D004971:Estrus / Q000187:drug effects*; D005260:Female; D008535:Megestrol / Q000008:administration & dosage; D011247:Pregnancy; D011278:Pregnanes / Q000008:administration & dosage; D011372:Progestins / Q000008:administration & dosage
D003276:Contraceptives, Oral; D011278:Pregnanes; D011372:Progestins; D008535:Megestrol