A robust toxicology data system typically includes: - Chemical Information: Details about chemical structure, properties, and uses. - Toxicity Data: Information on acute, sub-chronic, and chronic toxicity, including LD50 values, NOAELs, and LOAELs. - Exposure Data: Data on how and to what extent humans or animals are exposed to chemicals. - Epidemiological Data: Studies and reports on the incidence and prevalence of health effects related to chemical exposure. - Regulatory Data: Guidelines and limits set by governmental and international agencies.