title: Haemonchus contortus: some factors influencing the degree of resistance of sheep immunized with attenuated larvae.
mesh_terms: D000018:Abomasum; D000818:Animals; D000917:Antibody Formation; D004847:Epithelial Cells; D005260:Female; D006188:Haemonchiasis / Q000276:immunology*; D006189:Haemonchus / Q000276:immunology* / Q000528:radiation effects; D007814:Larva / Q000276:immunology / Q000528:radiation effects; D007962:Leukocytes; D008297:Male; D009093:Mucus / Q000276:immunology; D012756:Sheep; D014251:Trichostrongyloidea / Q000276:immunology*; D014252:Trichostrongyloidiasis / Q000276:immunology*; D014613:Vaccines, Attenuated / Q000276:immunology*
chemical_list: D014613:Vaccines, Attenuated