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Formation of putative metabolites of PCB atropisomers with the OH-group in the 2,3,6-trichlorinated ring by rat liver microsomes (PCB 91: R2 = Cl; R1 = R3 = H; PCB 95: R3 = Cl; R1 = R2;= H; PCB 132: R1 = R2 = Cl; R3 = H; PCB 149: R2 = R3 = Cl; R1 = H).
