Effects of progesterone on the cells of the anterior hypophysis of the rat

Abstract

In view of the important r61e of progesterone in the sexual cycle and the inconsistency of the histological findiiigs iii previous investigatioiis, t h e cxpeiinients described below have h e n carried out iii an attempt to det~ririiiie the effects of progestcronc 011 the structure of the anterior hypophyses of castrated and non-cast rated f eniale rats.