title: Bluetongue virus in sheep. Intensification of the clinical response by previous oral administration.
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D009500:Neutralization Tests; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology*; D014777:Virus Diseases / Q000276:immunology / Q000662:veterinary*; D014780:Viruses / Q000276:immunology*