title: Suppression of the immune response to clostridial vaccine by tick-borne fever.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D003013:Clostridium / Q000276:immunology*; D007111:Immunity, Cellular; D007165:Immunosuppression Therapy; D012282:Rickettsia Infections / Q000276:immunology* / Q000635:transmission / Q000662:veterinary; D012756:Sheep; D012757:Sheep Diseases; D013987:Ticks; D014612:Vaccines / Q000276:immunology*
chemical_list: D014612:Vaccines