Michigan's Kalamazoo River is polluted by polychlorinated biphenyls (PCBs), highly toxic chemicals banned in the 1970s.

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There was another class of hazardous chemical present: polychlorinated biphenyls (PCBs).

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Worse still, some of those fish are full of polychlorinated biphenyls (PCBs), which at worst, cause cancer and at best wreck humans' immune, reproductive, nervous and endocrine systems.

FORBES

Stripers there happen to be chock full of polychlorinated biphenyls (PCBs), which at worst, cause cancer in humans and at best wreck immune, reproductive, nervous and endocrine systems.

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Polychlorinated biphenyls, (PCBs), chlorofluorocarbons (CFCs) and DDT are also organochlorine compounds which, although banned or discredited, are still evident in the environment.

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