Studies on vaginal cytology during the canine oestrous cycle.
D000818:Animals; D002455:Cell Division; D004285:Dogs; D004967:Estrogens / Q000502:physiology; D004971:Estrus; D005260:Female; D011247:Pregnancy; D014621:Vagina / Q000166:cytology*; D014626:Vaginal Smears
D004967:Estrogens