polychlorinated biphenyl

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polybrominated biphenyl (PBB) any of various brominated derivatives of biphenyl; uses and toxic hazards are similar to those of polychlorinated biphenyls. They typically are deposited in body fat stores and are rarely mobilized except through lactation.
polychlorinated biphenyl (PCB) any of various chlorinated derivatives of biphenyl, toxic and carcinogenic nonbiodegradable compounds used as heat-transfer agents and electrical insulators; they are readily absorbed from the gastrointestinal tract, and those with a lower percentage of chlorine are associated with a higher toxicity but are more readily excreted.

pol·y·chlo·rin·at·ed bi·phen·yl (PCB),

biphenyl in which some or all of the hydrogen atoms attached to ring carbons are replaced by chlorine atoms; a [probable] human carcinogen and teratogen.

polychlorinated biphenyl


pol·y·chlo·rin·at·ed bi·phe·nyl

(polē-klōri-nā-tĕd bī-fenil)
Agent in which some or all of the hydrogen atoms attached to ring carbons are replaced by chlorine atoms; possible human carcinogen and teratogen.

polychlorinated biphenyl

PCB. Any one of a family of industrial pollutants known to be capable of inducing cancer.
References in periodicals archive ?
Approximately a year later, another study was conducted, but no Aroclor 1254 PCBs were recovered.
Rats were fed a diet consisting of standard rat chow (Mowlan Teklad, Madison, WI) with Aroclor 1254[R] (AccuStandard, Inc.
Inhibition of rat testicular androgenesis by a polychlorinated biphenyl mixture Aroclor 1248.
We obtained animals that had been exposed to Aroclor 1254O in 1.
Aroclor 1254 exposure reduces disease resistance and innate immune responses in fasted Arctic charr.
Keri Hornbuckle, a University of Iowa professor of civil and environmental engineering, says that prior to 2007 most environmental monitoring for PCBs was not designed to sample for all 209 PCB congeners but focused only on those that were produced intentionally, the commercial Aroclor mixtures.
Congener-specific distribution of polychlorinated biphenyls in brain regions, blood, liver, and fat of adult rats following repeated exposure to Aroclor 1254.
Early developmental exposure to BDE 99 or Aroclor 1254 affects neurobehavioural profile: interference from the administration route.
BACKGROUND: Aroclor 1254 (A1254) interferes with normal dendritic growth and plasticity in the developing rodent brain, but the mechanism(s) mediating this effect have yet to be established.
Previous studies in cultured neurons demonstrated that the commercial PCB mixture Aroclor 1254 (Al254) (Inglefield et al.
Gestational-lactational exposure to Aroclor 1254 impairs radial-arm maze performance in male rats.
2009) reported no association between estimated prenatal PCB exposure (as Aroclor 1260; interquintile range 0.