Acute DiseaseLentiviruses, BovineQ FeverCoxiella burnetiiInfectious Anemia Virus, EquineChronic DiseaseHorsesVirulenceEncephalomyelitis, Autoimmune, ExperimentalAntibodies, ViralDisease Models, AnimalVirus ReplicationMice, Inbred BALB CTime FactorsMolecular Sequence DataT-LymphocytesEnzyme-Linked Immunosorbent AssayLymphocyte ActivationCytokinesAmino Acid SequenceMice, Inbred C57BLBase SequenceVital Signs