Polychlorinated biphenyls (IMAGE) Ural Federal University Caption Polychlorinated biphenyls are toxic industrial waste that accumulates in the adipose tissues of humans and animals and pollutes the environment Credit UrFU Usage Restrictions Please credit the image: UrFU License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.