title: Assessing hazards from prolonged and repeated exposure to low doses of toxic substances.
mesh_terms: D000818:Animals; D002274:Carcinogens, Environmental / Q000633:toxicity; D004147:Dioxins / Q000633:toxicity; D004781:Environmental Exposure; D000882:Haplorhini; D006801:Humans; D006843:Hydrocarbons, Chlorinated; D006967:Hypersensitivity; D007306:Insecticides / Q000633:toxicity; D009943:Organophosphorus Compounds; D051381:Rats; D013997:Time Factors; D014116:Toxicology
chemical_list: D002274:Carcinogens, Environmental; D004147:Dioxins; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D009943:Organophosphorus Compounds