The development of resistance to Trichostrongylus colubriformis by lambs under conditions of continuous infection.
D000818:Animals; D001835:Body Weight; D005260:Female; D006128:Growth; D007109:Immunity; D007814:Larva; D010270:Parasite Egg Count; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology*; D014252:Trichostrongyloidiasis / Q000276:immunology / Q000662:veterinary*