LegionellaLegionella pneumophilaLegionnaires' DiseaseLegionellosisWater MicrobiologyAcanthamoeba castellaniiAir ConditioningHartmannellaAcanthamoebaWater SupplyBacterial ProteinsSanitary EngineeringImmunophilinsAmoebarab1 GTP-Binding ProteinsLegionellaceaeDNA, BacterialLung AbscessMacrophagesSerotypingColony Count, MicrobialMolecular Sequence DataPhagosomesBathsNeuronal Apoptosis-Inhibitory ProteinVirulenceAntigens, BacterialMice, Inbred ABacterial Secretion SystemsPneumonia, BacterialCulture MediaAgglutination TestsCharcoalHost-Pathogen InteractionsDental EquipmentSignal TransductionMice, Inbred C57BLVacuolesVirulence FactorsAntibodies, BacterialU937 CellsCD8-Positive T-LymphocytesAmino Acid SequenceDrinking WaterDisinfectionSpecies SpecificityAmoebidaBacteriological TechniquesImmunologic MemoryGenes, BacterialFlagellinFluorescent Antibody TechniquePeptidylprolyl IsomeraseCell LinePolymerase Chain ReactionCells, CulturedGuinea PigsDental FacilitiesLymphocyte ActivationAmoebozoaErythromycinGene Expression Regulation, BacterialInterferon-gammaWater PollutionFresh WaterCytotoxicity, ImmunologicMutationRNA, Ribosomal, 16SWater PurificationWater WellsLungSequence Analysis, DNAPneumoniaCD4-Positive T-Lymphocytes