Histopathological examination of the kidney and liver (H&E, 200×). A, B and C were histopathological examinations of the kidney of pigs fed thebasal diet, and the basal diet with 50 or 500 mg/kg neotame, respectively. D, E and F were histopathological examinations of the liver of pigs fed the basaldiet, and the basal diet with 50 or 500 mg/kg neotame, respectively