Polychlorinated Biphenyls in the Global Ecosystem

@article{Risebrough1968PolychlorinatedBI,
  title={Polychlorinated Biphenyls in the Global Ecosystem},
  author={Robert W. Risebrough and P. Rieche and David B. Peakall and Steven G. Herman and M. N. Kirven},
  journal={Nature},
  year={1968},
  volume={220},
  pages={1098-1102}
}
Polychlorinated biphenyls are widely dispersed in the global ecosystem, and are powerful inducers of hepatic enzymes which degrade oestradiol. Together with other chlorinated biocides, such as DDT, they could account for a large part of the aberration in calcium metabolism which has been observed in many species of birds since the Second World War. 
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