Acute DiseaseLentiviruses, BovineQ FeverCoxiella burnetiiInfectious Anemia Virus, EquineChronic DiseaseVirulenceHorsesEncephalomyelitis, Autoimmune, ExperimentalDisease Models, AnimalAntibodies, ViralMolecular Sequence DataVirus ReplicationMice, Inbred BALB CTime FactorsT-LymphocytesEnzyme-Linked Immunosorbent AssayLymphocyte ActivationCytokinesAmino Acid SequenceMice, Inbred C57BLBase SequenceSpecies Specificity