CTD contains curated and inferred chemical–disease associations.
Curated associations are extracted from the published literature by CTD curators.
Inferred associations are established via curated chemical–gene interactions (e.g., chemical A is associated with disease B because chemical A has a curated interaction with gene C, and gene C has a curated association with disease B).
Curated and inferred associations are identified, and help users develop hypotheses about mechanisms underlying environmental diseases. References provide details about the associations.