The response of sheep to parenteral vaccination and immunizing infections against the abomasal nematode, Haemonchus contortus.
D000018:Abomasum / Q000276:immunology; D000818:Animals; D006188:Haemonchiasis / Q000276:immunology / Q000662:veterinary*; D006189:Haemonchus / Q000276:immunology; D008297:Male; D012756:Sheep / Q000276:immunology*; D012757:Sheep Diseases / Q000276:immunology*; D014252:Trichostrongyloidiasis / Q000662:veterinary*; D014611:Vaccination / Q000662:veterinary*