source: [word=biphenyls] | [lemma=top] [□] □
destination: [word=biphenyls] | [lemma=top] [□=□] □
spec: 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 . Not only do genes make different proteins , they make them in varying amounts . Since we are profiling X.509 , I believe our only choices are a ) accept the categories or b ) leave out key usage entirely . 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 . As an Independent candidate for president in 1980 , I learned the bitter truth that a challenger to the two-party system is almost immediately branded a `` spoiler . The feeling is somewhat infectious . 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 . 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 . The result copolymers showed low band gaps in the Uv-vis spectra and cyclic voltammetry .