Pulmonary SurfactantsMeconium Aspiration SyndromeSurface TensionSurface-Active AgentsBiological ProductsNitrosomethylurethaneRespiratory Distress Syndrome, NewbornLung CompliancePulmonary Surfactant-Associated Protein AFatty AlcoholsHydrochloric AcidRespiratory Distress Syndrome, AdultRespiration, ArtificialPulmonary AlveoliRespiratory MechanicsPhospholipidsBronchoalveolar Lavage FluidPulmonary Surfactant-Associated ProteinsBlood Gas AnalysisLungProteolipidsPartial PressurePulmonary Surfactant-Associated Protein DPulmonary Surfactant-Associated Protein BAcute Lung InjuryLung DiseasesPositive-Pressure RespirationInfant, NewbornPulmonary Surfactant-Associated Protein CInfant, PrematureOxygenSwineRats, Sprague-Dawley1,2-DipalmitoylphosphatidylcholineDisease Models, AnimalPhosphatidylglycerolsCetrimonium CompoundsMicellesAdsorptionSurface PropertiesPolysorbatesPhosphatidylcholinesEmulsionsAirBronchoalveolar LavagePneumocytesWaterSodium Dodecyl SulfatePoloxamerDioctyl Sulfosuccinic AcidMacrophages, AlveolarPolyethylene GlycolsPoloxaleneFluorine CompoundsInstillation, DrugCollectins