Feline Infectious PeritonitisCoronavirus, FelineCoronaviridaeCoronaviridae InfectionsPeritonitisCatsCat DiseasesCoronavirus, CanineTransmissible gastroenteritis virusAntibody-Dependent EnhancementCoronavirusCoronavirus 229E, HumanSpike Glycoprotein, CoronavirusAntigens, CD13Specific Pathogen-Free OrganismsViral Envelope ProteinsAntibodies, ViralMolecular Sequence DataCell LineAmino Acid SequenceCoronavirus InfectionsPeritonitis, TuberculousPeritoneal Dialysis, Continuous AmbulatoryVirus ReplicationAntigens, ViralPeritoneal DialysisRNA VirusesRNA, Viral