Hepatocarcinogenicity of PCB Congeners. I. Initiation and Promotion of Enzyme-Altered Rat Liver Foci by 2,2′,4,5′-Tetra- and 2,2′,4,4’5,5′-Hexachlorobiphenyl Publication Attachment: 90-214.pdf Authors: Laib, RJ, Rose, N, Brunn, H Year: 1990