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Representative chromatograms showing the presence of several trichlorinated (a1) MeO-OH-PCB, (a2) MeO-PCB sulfate, (a3) OH-quinones, and (a4) (OH)2-quinones in feces from female CV mice exposed to the high dose (30 mg/kg) of the Fox River mixture. Representative mass spectra with the molecular ions are shown for each metabolite class (panels b1-b4). Only representative structures are shown; the position of the substituents is unknown.
