title: Selection studies on anthelmintic resistant and susceptible populations of Trichostrongylus colubriformis of sheep.
mesh_terms: D000818:Animals; D000871:Anthelmintics / Q000627:therapeutic use*; D004353:Drug Evaluation, Preclinical / Q000379:methods; D004351:Drug Resistance; D007978:Levamisole / Q000494:pharmacology; D012641:Selection, Genetic; D012756:Sheep; D012757:Sheep Diseases / Q000188:drug therapy*; D013045:Species Specificity; D014252:Trichostrongyloidiasis / Q000188:drug therapy*; D014253:Trichostrongylosis / Q000188:drug therapy*; D014254:Trichostrongylus / Q000187:drug effects*
chemical_list: D000871:Anthelmintics; D007978:Levamisole