Newborn female BALB/cCrgl mice received hormone treatments (daily for 5 days): 10(-1) micrograms diethylstilbestrol (DES), 2 X 10(-1) micrograms DES, 2 micrograms DES, 100 micrograms progesterone (P), 137 micrograms 17 alpha-hydroxyprogesterone caproate, 10(-1) micrograms DES + 100 micrograms P, 2