| Comparative toxicity of chlordane, chlorpyrifos, and aldicarb to four aquatic testing organisms. |
| The agency has already taken the needed action limiting methyl parathion and chlorpyrifos. |
| The major OP insecticides used include acephate, azinphos methyl, chlorpyrifos, dimethoate, disulfoton, fenamiphos, and phosmet. |
| Chlorpyrifos is an organophosphate pesticide that is characterized as a strong toxin. |
| Insecticides used for seed treatments in crops include diazinon, lindane, imidacloprid, permethrin, chlorpyrifos, and tefluthrin. |
| With chlorpyrifos addition during mid-differentiation, ChAT was unaffected, but TH was increased slightly. |
