LegionellaLegionella pneumophilaLegionnaires' DiseaseLegionellosisWater MicrobiologyAcanthamoeba castellaniiAir ConditioningHartmannellaAcanthamoebaWater SupplySanitary EngineeringImmunophilinsAmoebaLegionellaceaerab1 GTP-Binding ProteinsBacterial ProteinsLung AbscessDNA, BacterialSerotypingColony Count, MicrobialBathsNeuronal Apoptosis-Inhibitory ProteinPhagosomesMacrophagesPneumonia, BacterialMice, Inbred AAntigens, BacterialAgglutination TestsCharcoalCulture MediaDental EquipmentAntibodies, BacterialDrinking WaterDisinfectionAmoebidaBacteriological TechniquesU937 CellsPeptidylprolyl IsomeraseVirulenceDental FacilitiesVacuolesAmoebozoaFlagellinErythromycinGuinea PigsWater PollutionFresh WaterSpecies SpecificityGenes, BacterialRNA, Ribosomal, 16SWater PurificationWater WellsPolymerase Chain ReactionFluorescent Antibody TechniqueMolecular Sequence Data