The antagonistic effects of estrogen and progesterone on the staircase phenomenon in uterine muscle.
D004967:Estrogens; D005260:Female; D006801:Humans; D009215:Myometrium; D011374:Progesterone / Q000494:pharmacology*; D014599:Uterus / Q000502:physiology*
D004967:Estrogens; D011374:Progesterone
ESTROGENS/effects; PROGESTERONE/effects; UTERUS/physiology