Microvilli of the Cells of the Human Adrenal Cortex

Abstract

IN the course of an electron microscopic survey of the human adrenal cortex an interesting specialization of the cortical cell plasma membranes was noted. Human adrenal cortex was removed at operation, fixed in 1 per cent isotonic osmic acid, embedded in methacrylate, sectioned by the standard technique on a thermal advance microtome, and examined in a Philips EM 100 microscope. Using parallel thick sections stained (Wright–Giemsa) and the light microscope, the different zones and cell types were readily identified.