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The uptake of polychlorinated biphenyl (PCB) congeners was monitored in rainbow trout caged during the dredging operation of General Motors at its Superfund site in Massena, New York. Trout were caged at the GM site and at a reference (control) site for two time periods (21 and 42 days). The PCB loading was compared with the inducibility of phase I and II enzymes and antioxidant defenses in the...