Adrenal gland histopathology (H&E staining).

A: Normal adrenal gland tissue from the sham-operated group (x 100). B and C: Adrenal gland tissue after 4 h of IAH at 15 (B, slight adrenal cortex congestion and red blood cell exudation, x100) or 20 (C, mild neutrophil infiltration, x100) mmHg IAP. D: Adrenal gland tissue after 4 h of IAH at 30 mmHg IAP (moderate adrenal cortex congestion, red blood cell exudation, and neutrophil infiltration, x40). E: Adrenal gland tissue after 4 h of IAH at 30 mmHg IAP and 2 h of decompression (x100). F: Adrenal gland tissue after 30 mmHg IAP for 4 h and 2 h of decompression (severe adrenal cortex congestion, red blood cell exudation, and neutrophil infiltration, x400).