Abstract
When human chorionic gonadotropin (HCG) plus estradiol-17B were added to the perfusion fluid citrate utilization was enhanced after a 5-hour lag period. The addition of HCG alone appeared to stimulate citrate utilization to a lesser degree and after a longer lag period. Estradiol alone had no effect. Citrate utilization was inhibited by the addition of fluoroacetate and the response to hormonal stimulation completely blocked.