[Similarities and differences between hepatic changes induced in rats by alpha-naphthyl-isothiocyanate and those induced by an alalogous chemical composition (alpha-naphthyl isocyanate, beta-naphthyl isocyanate, phenyl isosulfocyanurate, benzyl sulfo-cyanaurate, alpha-naphthyl-urea, alpha-naphthyl-thourea, alpha-dinaphthyl-thiourea)].