higher concentrations of PCB than dead tissue, but this is not to say that dead tissue did not still take up large amounts of PCB as well. Homologs For a complete list of the 209 PCB congeners, see PCB congener list. Note that biphenyl, while not technically a PCB congener because of its lack of chlorine substituents, is still typically included in the literature. See also Bay mud Organochlorine compound Polybrominated biphenyl Zodiac, a novel by Neal Stephenson which involves PCBs and their impact on the environment. References External links ATSDR Toxicological Profile U.S. Department of Health and Human Services IARC PCB Monograph PCBs – US EPA National Toxicology Program technical reports searched for "PCB" Polychlorinated Byphenyls: Human Health Aspects by the WHO Current Intelligence Bulletin 7: Polychlorinated (PCBs)—NIOSH/CDC (1975) It's Your Health – PCBs (Health Canada) Chloroarenes Flame retardants Endocrine disruptors Hazardous air pollutants IARC Group 2A carcinogens Soil contamination Synthetic materials Electric transformers Suspected testicular toxicants Suspected fetotoxicants Suspected female reproductive toxicants Persistent organic pollutants under the Convention on Long-Range Transboundary Air Pollution Persistent organic pollutants under the Stockholm Convention Monsanto Biphenyls