PneumocystisPneumonia, PneumocystisPneumocystis InfectionsPneumocystis jiroveciiPneumoniaInflammationPneumonia, BacterialPneumonia, ViralPneumonia, PneumococcalTrimethoprim-Sulfamethoxazole CombinationCryptogenic Organizing PneumoniaPentamidineLungBronchoalveolar Lavage FluidPneumonia, StaphylococcalAIDS-Related Opportunistic InfectionsPneumonia, Ventilator-AssociatedInflammation MediatorsDapsonePneumonia, AspirationImmunocompromised HostOpportunistic InfectionsSulfamethoxazolePneumonia, MycoplasmaCommunity-Acquired Infectionsbeta-GlucansAntibodies, FungalAnti-Infective AgentsAtovaquoneDisease Models, AnimalPneumonia, LipidLung Diseases, InterstitialTrimethoprimDihydropteroate SynthaseDNA, FungalMice, Inbred C57BLBronchoalveolar LavageMacrophages, AlveolarCytokinesSputumAcquired Immunodeficiency SyndromeMice, KnockoutNaphthoquinonesPolymerase Chain ReactionAnti-Bacterial AgentsMice, Inbred BALB CImmunocompetenceImmunosuppressionMice, SCIDAntigens, FungalMethenamineAnti-Inflammatory AgentsPulmonary AlveoliTumor Necrosis Factor-alphaAntifungal AgentsRadiography, ThoracicNeutrophilsBiological MarkersTime FactorsIdiopathic Interstitial PneumoniasAmidinesBronchoscopyProspective StudiesStreptococcus pneumoniaeRetrospective StudiesFatal OutcomePulmonary EosinophiliaMacrophagesHIV InfectionsInterleukin-6C-Reactive ProteinMurine pneumonia virusTreatment OutcomeAdrenal Cortex HormonesLung DiseasesRisk FactorsMolecular Sequence DataCells, CulturedFungal ProteinsRats, Sprague-DawleyNeurogenic InflammationChemokinesCross InfectionAcute DiseaseAerosolsRespiration, ArtificialChemokine CXCL2SulfamethoxypyridazineLegionnaires' DiseaseMycoplasma pneumoniaeCortisoneSeverity of Illness IndexEnzyme-Linked Immunosorbent AssaySensitivity and SpecificityCD4-Positive T-LymphocytesSignal TransductionLipopolysaccharidesImmunity, InnateFolic Acid AntagonistsHospitalization