Renal EGFR expression levels were higher in man than in women. Relatively normal human kidney sections from nephrectomy were stained with EGFR antibody. EGFR immunostaining was found in tubular epithelial cells (T), glomerulus (G), and arterials (V), and renal EGFR expression was higher in men and in women (***P<0.001; n=5 in each group). Original magnification, ×160 (scale bar, 50 µm).