ABSTRACT
In this chapter, OTA examines Federal agency responses to the list of carcinogens in the Annual Report on Carcinogens and to positive results for chemicals tested in the carcinogenicity bioassays conducted by the National Cancer Institute (NCI) and National Toxicology Program (NTP). This analysis only provides summary information about the chemicals that may be considered carcinogenic based on the Annual Report or positive NCI/NTP bioassay results and describes the extent of agency actions on these chemicals. (As in the rest of this background paper the term “chemical” is used here broadly to include substances, mixtures, groups of substances, and exposures.)
