title: Polychlorinated biphenyls: occurrence and biological effects.
mesh_terms: D000818:Animals; D001713:Biphenyl Compounds / Q000032:analysis / Q000378:metabolism / Q000494:pharmacology / Q000633:toxicity; D001717:Birds; D055598:Chemical Phenomena; D002621:Chemistry; D002713:Chlorine / Q000032:analysis / Q000378:metabolism / Q000494:pharmacology / Q000633:toxicity; D003445:Crustacea; D003634:DDT / Q000032:analysis; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D004032:Diet; D004781:Environmental Exposure; D005060:Europe; D005399:Fishes; D006801:Humans; D007313:Insecta; D007928:Lethal Dose 50; D009656:North America; D051381:Rats; D012098:Reproduction / Q000187:drug effects; D014867:Water / Q000032:analysis; D014876:Water Pollution
chemical_list: D001713:Biphenyl Compounds; D014867:Water; D003633:Dichlorodiphenyl Dichloroethylene; D002713:Chlorine; D003634:DDT