Fig. 4
From: The morphology of the adrenal gland in the European bison (Bison bonasus)
The adrenal gland in the European bison. Stain = Azan trichrome. Bar = 100 μm. a Inner layer of the connective tissue layer forming thick connective tissue trabeculae that penetrate the zona glomerulosa; b Numerous blood vessels in the adrenal cortex; c Numerous blood vessels surrounded by collagen fibers forming thick circular layers in the adrenal cortex. Cap – capsule, T – trabecule, ZG – zona glomerulosa, C – cortex, BV – blood vessels