THE PRESENCE OF LACTOGEN RECEPTORS IN HUMAN CHORION LAEVE

Abstract
Lactogen receptors have been identified in human chorion laeve and possibly placenta but not other periplacental tissues. The receptors show the same hormonal specificity, and similar binding parameters (affinity 0.47 × 109 l/m, capacity 175 fmole/mg) to lactogen receptors in mammary gland and liver. The presenceof these receptors suggests they may play a role in mediating anaction(s) ofamniotic fluid prolactin in chorion laeve, such as osmoregulation.