ArterivirusArterivirus InfectionsArteritis Virus, EquinePorcine respiratory and reproductive syndrome virusNidoviralesArteriviridaeLactate dehydrogenase-elevating virusPorcine Reproductive and Respiratory SyndromeRNA ReplicaseRNA, ViralOpen Reading FramesViral Nonstructural ProteinsVirus ReplicationAdaptive ImmunityGenome, ViralHorsesCricetinaeMolecular Sequence DataCell Line