Immunohistolochemical Localization of PRL and HPL in Human Decidua and Chorion of Early Pregnancy / 昆明医科大学学报

ABSTRACT

By the means of immunohistology we have observed the distribution of prolactin (PRL) and human placenta lactogen (HPL) in decidua and ehorion. The results are as followe: (1) HPL was negatively stained in normal nonpregnant endometria; (2)PRL staining showed posi- tive in cytoplasm of decidual cells whereas negative in chorionic villi; (3) syncytiotrophoblast cells of chorionic villi were positive for villi; (4) some small cells scattered between decidual cells were positive for HPL; (5)extravillous trophoblastic infiltrated in decidua were positively stained with HPL; (6)it is interesting to note that HPL positive cells could be present among the cells of blood vessel wall, especially in endothelial cells of capillaries, about which there is no report so far. The significance of HPL positive cells in decidua deserves further study.