title: Fly control and chronic toxicity from feeding two chlorinated organophosphorus insecticides to laying hens.
mesh_terms: D000818:Animals; D002645:Chickens / Q000187:drug effects*; D005260:Female; D006793:Houseflies; D007300:Insect Control; D007306:Insecticides / Q000633:toxicity*; D009943:Organophosphorus Compounds; D014753:Vinyl Compounds / Q000633:toxicity
chemical_list: D007306:Insecticides; D009943:Organophosphorus Compounds; D014753:Vinyl Compounds