PROGESTIN IN THE AMNIOTIC FLUID OF MONKEYS1

Abstract
Samples of amniotic fluid of 22 monkeys were obtained at Caesarean section on the 40th to 150th day of pregnancy and were bio-assayed for progestin. Specimens from ten monkeys contained 1.70, 1.13, 0.95, 0.57, 0.57, 0.57, 0.38, 0.38, and 0.19 Progesterone Equivalents of "free" progestin/ ml. amniotic fluid. The remaining 12 samples contained less than 0.19 P.E./ml.