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Immunohistochemistry staining for 17α-hydroxylase (CYP17A1) (Scale = 50 µm). (a) Adrenocortical carcinoma, (b) adrenocortical adenoma with Cushing’s Syndrome, (c) non-functioning adrenocortical adenoma, and (d) normal adrenal gland. ZG—zona glomerulosa; ZF—zona fasciculata; ZR—Zona reticularis.
