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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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.
Farlex Partner Medical Dictionary © Farlex 2012

polychlorinated biphenyl

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

polychlorinated biphenyl

PCB. Any one of a family of industrial pollutants known to be capable of inducing cancer.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Aprotocol using a low concentration of rat S9 (Aroclor 1254 or [beta]NF/PB induced S9) during 24 h incubation was found to be suitable for the formation of active metabolites with a higher potency as demonstrated with MC.
Polychlorinated biphenyl (Aroclor 1254) inhibits testosterone biosynthesis and antioxidant enzymes in cultured rat Leydig cells.
Though PCBs in general are widely used, Mills said Aroclor 1268 was only used at the site in Brunswick and another place in Rhode Island, which suggests the chemical found in Georgia's least terns came from the LCP site.
2007 [15] studied the effects of Aroclor 1254 in adult tilapia and observed several reproductive alterations.
Moore, Comparative Carcinogenicity in Sprague- Dawlley Rats of the Polychlorinated Biphenyl Mixtures Aroclors 1016, 1242, 1254 and 1260., Toxicological Sciences, 41, 62 (1998).
Louis, MO, USA) and aroclor 1254 was purchased from Supelco (Bellefonte, PA, USA).
Ameliorative effect of vitamins (a tocopherol and ascorbic acid) on PCB (Aroclor 1254) induced oxidative stress in rat epididymal sperm Reproductive Toxicology, 23: 239-245.
On the other hand, steviol was found to be highly mutagenic when evaluated in the presence of a 9000 X g supernatant fraction derived from the livers of Aroclor 1254-pretreated rats.
This vitamin also counteracts the testicular oxidative stress-induced by exposure to pro-oxidants such as arsenic, pCbs (Aroclor 1254), cadmium, endosulfan, and alcohol (Sen Gupta et al., 2004; Senthil et al., 2004; Maneesh et al., 2005; Rao et al., 2005; Chang et al., 2007).