Recent observations from this laboratory indicated a role of prostaglandin E2 (PGE2) in
masculine differentiation of the external genitalia of the fetal mouse, induced by fetal …

By treatment of gravid rats during the second half of gestation and of the newborn during the
first 3 post-natal weeks with an anti-androgen, l, 2α-methylene-6-chloro-Δ46-pregnadiene …

Rats were injected with oil on Days 17.5 and 18.5 of pregnancy or with 2 mg of testosterone
propionate (TP) on Days 15.5 and 16.5, or Days 17.5 and 18.5, or Days 19.5 and 20.5. The …

Male mice were injected daily with cyproterone acetate for 10 consecutive days during one
of the four following periods: 1–10 days, 11–20 days, 21–30 days or 31–40 days. At all …

The function that aromatizable androgens may have in female puberty is unclear. The
present experiments were undertaken to examine, using a quantitative approach, the role …

Female hamsters which received treatment with testosterone, testosterone propionate, or
diethylstilbestrol on Days 2–4 of postnatal life displayed mounting behavior after treatment in …

Butenandt and Kudzus (1) have noted that certain androgens, when injected into immature
female rats, cause premature opening of the vagina. This observation has been interpreted …

TESTOSTERONE propionate was injected subcutaneously into pregnant or newborn♀♀.
The urogenital organs are described. Injections on the 9th day of pregnancy resulted in …

Exposure of animals perinatally to some hormonally active agents may imprint permanent
changes on the action of related hormones. The present study investigated the effects of …

Bisected fetal guinea pig ovaries and testes were examined in vitro for their ability to
synthesize androgens from [1-14C] sodium acetate and estrogens from either [1-3H] …