Acute DiseaseLentiviruses, BovineQ FeverCoxiella burnetiiInfectious Anemia Virus, EquineChronic DiseaseVirulenceHorsesEncephalomyelitis, Autoimmune, ExperimentalAntibodies, ViralDisease Models, AnimalVirus ReplicationMice, Inbred BALB CMolecular Sequence DataT-LymphocytesTime FactorsLymphocyte ActivationEnzyme-Linked Immunosorbent AssayCytokinesAmino Acid SequenceMice, Inbred C57BLBase Sequence