Effects of protocatechuic acid, S-methylmethanethiosulfonate or 5-hydroxy-4-(2-phenyl-(E)ethenyl)-2(5H)-furanone(KYN-54) on 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone-induced pulmonary carcinogenesis in mice

Modifying effects of dietary exposure of protocatechuic acid (PCA), a natural monophenolic compound, S-methylmethanethiosulfonate (MMTS), an organosulfur compound newly isolated from cauliflower, and 5-hydroxy-4-(2-phenyl-(E)-ethenyl)-2(5H)-furanone (KYN-54), a novel retinoidal butenolide compound, on 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) (10 mmol, single i.p. injection)-induced pulmonary carcinogenesis were examined in female A/J...