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Photomicrographs of renal cortices of rats. Rats were exposed to AA (10 mg/kg/day) or vehicle by daily intraperitoneal injection for 35 days. The kidneys were excised and stained with HE (A and B) or AZ (C and D). Data are representatives of each group with 4 or 6 test and sham rats. Scale bar = 100 μm.
