Figure 1. Adrenal cortex structure and histology.

A. Schematic of a single adrenal cortex structural unit. Beneath the capsule, zG cells are organized into rosettes and are in direct contact with zF cells organized in cords. zG cells migrate centripetally and transdifferentiate into zF cells (red arrow) during homeostatic maintenance. B. H&E staining of an adult mouse adrenal cortex cross section. zG cells are small and densely packed. zF cells appear columnar and have a larger cytoplasmic volume.