Regulation of Haemonchus contortus populations in sheep exposed to continuous infection.
D000818:Animals; D006188:Haemonchiasis / Q000517:prevention & control / Q000662:veterinary*; D006189:Haemonchus / Q000254:growth & development* / Q000472:pathogenicity; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D014251:Trichostrongyloidea / Q000254:growth & development*; D014252:Trichostrongyloidiasis / Q000662:veterinary*