Immunocytochemical Localization of Estrogen Receptor in Various Anterior Pituitary Hormone Cells of Adult Male and Female Rats.

Estrogen receptor (ER) -bearing parenchymal cells in the rat anterior pituitary gland were identified and classified immunocytochemically using antibodies against various anterior pituitary hormones as well as ER. The percentage of the respective pituitary hormone-positive cells among the total number of ER-immunoreactive cells (RH/ER) was higher in the order of somatotrophs, lactotrophs and gonad…