[word=biphenyls] | [lemma=top] [lemma=□] □ □
[word=biphenyls] | [lemma=top] [lemma=mark] □ □
[word=biphenyls] | [lemma=top] [lemma=on] □ □
Lawrence M. Schell , State University of New York-Albany , New York , seeks to determine the relationship between exposure to polychlorinated biphenyls ( PCBs ) and thyroid function and psychosocial measures in a population of Mohawk adolescents living along the St. Lawrence River in upstate New York . Since PCBs ( polychlorinated biphenyls ) were banned in 1977 as suspected carcinogens , the corporate giant has been dodging responsibility for removing the million or so pounds its factories dumped into the river for decades . The crayfish , Pacifastacus leniusculus , was exposed to dissolved polycyclic aromatic hydrocarbon ( PAH ) and polychlorinated biphenyls ( PCB ) congeners in short-term static and flow-thru water-only exposures . River and found concentrations of polychlorinated biphenyls ( PCBs ) that could cause health problems , especially for young children , pregnant women and women considering pregnancy . Phosphorus and polychlorinated biphenyls ( PCBs ) are also transported to waterways via air deposition .