Studies on immunity to Haemonchus contortus infection: the elimination of a challenge infection by immune sheep.
D000818:Animals; D007109:Immunity / Q000528:radiation effects*; D011830:Radiation Effects; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology*; D014251:Trichostrongyloidea / Q000528:radiation effects*; D014252:Trichostrongyloidiasis / Q000276:immunology*