The effect of the duration of progesterone pretreatment on the response of the spayed ewe to oestrogen.
D000818:Animals; D002369:Castration; D004967:Estrogens; D005260:Female; D006801:Humans; D008297:Male; D009919:Orchiectomy; D011374:Progesterone / Q000494:pharmacology*; D012756:Sheep
D004967:Estrogens; D011374:Progesterone
CASTRATION/experimental; ESTROGENS/effects; PROGESTERONE/effects