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Science 14 October 1966:
Vol. 154. no. 3746, pp. 261 - 263
DOI: 10.1126/science.154.3746.261
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Articles

Photosensitizing Compounds in Extracts of Drinking Water

Samuel S. Epstein 1 and Floyd B. Taylor 2

1 Children's Cancer Research Foundation, 35 Benney Street, Boston, Massachusetts
2 Division of Environmental Engineering and Food Protection, Department of Health, Education and Welfare, Washington, D.C.

By means of a photodynamic bioassay, with Paramecium caudatum, photosensitizing compounds have been demonstrated in extracts of finished drinking water in the United States. These findings are of interest in view of a demonstrated association between photodynamic toxicity and carcinogenicity. Neither the origin nor the identity of these compounds has been determined.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)