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Abstract
The metals of environmental, biological or commercial importance were studied in order to nominate chemicals as candidates for carcinogen bioassay to the National Cancer Institute. After the application of several qualifying criteria that related to previous, current or planned carcinogenicity tests, and to commercial significance, the preliminary candidate list of 1,383 chemicals was reduced to a final candidate list of 488 chemicals. Based upon consideration of both the suspicion of possible carcinogenic activity and evidence of potential human forty‐six chemicals were nominated.
Notes
Reprints may be obtained from Dr C.T. Helmes and also from Dr. H. F. Kraybill, Scientific Coordinator for the Office of Environmental Cancer, Division of Cancer Cause and Prevention, National Cancer Institute, Landow Building, Room C337, 7910 Woodmont Avenue, Bethesda, Maryland 20205