Pulmonary SurfactantsPulmonary Surfactant-Associated ProteinsPulmonary Surfactant-Associated Protein AProteolipidsSurface TensionPulmonary Surfactant-Associated Protein BPulmonary Surfactant-Associated Protein C1,2-DipalmitoylphosphatidylcholinePulmonary Surfactant-Associated Protein DPhosphatidylglycerolsSurface-Active AgentsPulmonary AlveoliLungPhospholipidsAirAdsorptionSurface PropertiesRespiratory Distress Syndrome, NewbornBiological ProductsPhosphatidylcholinesBronchoalveolar Lavage FluidApoproteinsMembranes, ArtificialVernix CaseosaMacrophages, AlveolarPressurePneumocytesLung ComplianceMeconiumSwine4-Chloro-7-nitrobenzofurazanCattleWaterCollectinsLipid BilayersLauratesRespiratory Distress Syndrome, AdultPulmonary Alveolar ProteinosisLipidsFetal Organ MaturityGlycoproteinsLung DiseasesHyaline Membrane DiseaseMicroscopy, Atomic ForceRespiratory AspirationFetusBronchoalveolar LavageQuartzPhase TransitionBiophysical Phenomena2-NaphthylamineBiophysicsTemperatureRabbitsAmniotic FluidNanotubes, CarbonInfant, NewbornCetrimonium CompoundsLiposomesCalorimetry, Differential ScanningSilicon DioxideMolecular Sequence DataPorphobilinogenPalmitic AcidMicellesRespiratory MucosaSheepRats, Sprague-DawleyAmino Acid SequenceMicroscopy, FluorescencePulmonary Gas ExchangeCells, CulturedChemistry, PhysicalAmnionMicroscopy, ElectronSus scrofaHydrophobic and Hydrophilic InteractionsMembrane FluidityCholesterolMannheimia haemolyticaRNA, MessengerTime FactorsDexamethasonePeptidesFatty AlcoholsGestational AgePolysorbatesCoated Materials, BiocompatibleKinetics