The CCRIS, or Chemical Carcinogenesis Research Information System, is a comprehensive database managed by the National Institutes of Health (NIH). It is a crucial resource in the field of toxicology, specifically focusing on the study of chemical substances that may cause cancer in humans. CCRIS provides a wealth of information on the carcinogenic potential of various chemicals, aiding researchers, regulatory agencies, and healthcare professionals in understanding and mitigating the risks associated with these substances.