Observations under the electron microscope on the localization of phosphatases in epithelial cells of Cowper's glands in rats.

The positive results of the reactions for alkaline and acid phosphatases were obtained in epithelial cells of Cowper's glands in rats. Observations under the electron microscope allowed us to state that alkaline phosphatase was localized in the cell's areola, in membranes of smooth intraplasmic reticulum and in the basement membrane of the epithelium. The acid phosphatase was seen in primary lysosomes as well as in the secondary ones, which are seldom seen on unincubated specimens.