Respiratory Distress Syndrome, NewbornPulmonary SurfactantsPulmonary Surfactant-Associated ProteinsProtein CPulmonary Surfactant-Associated Protein CPulmonary Surfactant-Associated Protein ARespiratory Distress Syndrome, AdultInfant, NewbornInfant, PrematureProteolipidsLungPulmonary Surfactant-Associated Protein BBetamethasoneSurface TensionGestational Age1,2-DipalmitoylphosphatidylcholinePulmonary Surfactant-Associated Protein DPregnancyPhosphatidylglycerolsProtein C DeficiencySurface-Active AgentsPulmonary AlveoliProtein C InhibitorPhospholipidsAirBiological ProductsBronchoalveolar Lavage FluidRespiration, ArtificialAdsorptionSurface PropertiesPhosphatidylcholinesActivated Protein C ResistanceAcute Lung InjuryPositive-Pressure RespirationLung CompliancePulmonary Gas ExchangeLung DiseasesRespiratory InsufficiencyFetal Organ MaturityTidal VolumeProtein SHyaline Membrane DiseaseThrombomodulinApoproteinsBarotraumaMacrophages, AlveolarMembranes, ArtificialRespiratory AspirationPneumocytesPressureVernix CaseosaGlycoproteinsLung InjuryProne PositionCattleAmniotic FluidSwineHigh-Frequency VentilationStress, PsychologicalBlood Coagulation FactorsFatty AlcoholsBronchoalveolar LavagePulmonary Alveolar ProteinosisMeconiumPulmonary EdemaMeconium Aspiration Syndrome4-Chloro-7-nitrobenzofurazanTime FactorsWaterOxygenFactor VCollectinsMolecular Sequence DataPneumoniaFetusBlood Gas AnalysisLipid BilayersLipidsAmino Acid SequenceLauratesRabbitsRespiratory Dead SpaceFactor VaFetal DistressRespiratory MechanicsSepsisRespiratory MucosaThrombinExtracorporeal Membrane OxygenationBlood CoagulationBronchopulmonary DysplasiaSheepInfant, Premature, DiseasesRecombinant ProteinsMicroscopy, Atomic ForceCells, CulturedQuartzFatal OutcomeKineticsRats, Sprague-Dawley