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Quantitative analyses of immunoreativity of cytochrome b5 (CYB5A) in human adrenal cortex. The area positive for CYB5A (CYB5A thickness) in four age categories in both male and female adrenals (A). The ratio of area positive for CYB5A to that of total cortex (CYB5A immunostaining (%)) in four age categories in both male and female adrenals (B) (*, P<0.05).
