Benzimidazole-resistant nematodes in sheep.
D000818:Animals; D001562:Benzimidazoles / Q000627:therapeutic use*; D004351:Drug Resistance; D009349:Nematode Infections / Q000188:drug therapy / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000188:drug therapy*
D001562:Benzimidazoles; C031000:benzimidazole