FINE STRUCTURE OF EMBRYONAL CARCIONOMA OF THE TESTIS

Abstract

Embryonal carcinoma of the testis was examined by electron microscopy. In the undifferentiated epithelial cells the normal feature of the germinal cells were well preserved whereas in the solitary cells, dense and homogeneous granules were found out inside the cavities of the rough endoplasmic reticum in addition to the usual structural changes specific for the malignant tumor cells. These granules resembled strongly to the intracisternal granules in the exocrine cells of the pancreas.