title: Infection with Haemonchus contortus in sheep and the role of adaptive immunity in selection of the parasite.
authors.forename: D B
authors.initials: DB
authors.lastname: Adams
mesh_terms: D000818:Animals; D006188:Haemonchiasis / Q000276:immunology / Q000469:parasitology / Q000662:veterinary*; D006189:Haemonchus / Q000276:immunology*; D008297:Male; D010270:Parasite Egg Count / Q000662:veterinary; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology / Q000469:parasitology*; D014251:Trichostrongyloidea / Q000276:immunology*; D014252:Trichostrongyloidiasis / Q000662:veterinary*