Levamisole-resistant nematodes.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D004351:Drug Resistance; D007978:Levamisole / Q000627:therapeutic use*; D010028:Ostertagia / Q000187:drug effects*; D010029:Ostertagiasis / Q000188:drug therapy / Q000662:veterinary*; D014252:Trichostrongyloidiasis / Q000662:veterinary*
D007978:Levamisole