Pulmonary SurfactantsSurface-Active AgentsSurface TensionPulmonary Surfactant-Associated Protein APulmonary Surfactant-Associated ProteinsProteolipidsPulmonary Surfactant-Associated Protein BSurface PropertiesPulmonary Surfactant-Associated Protein DPulmonary Surfactant-Associated Protein CWater1,2-DipalmitoylphosphatidylcholineAdsorptionMicellesPhosphatidylcholinesPhosphatidylglycerolsPhospholipidsAirLipid BilayersEmulsionsLungMembranes, ArtificialPulmonary AlveoliRespiratory Distress Syndrome, NewbornCetrimonium CompoundsBiological ProductsHydrophobic and Hydrophilic InteractionsModels, MolecularFatty AlcoholsThermodynamicsPolysorbatesModels, ChemicalPhase TransitionMaterials TestingSolutionsBronchoalveolar Lavage FluidOilsColloidsPressureKineticsMolecular ConformationTrioleinPhospholipases ALung CompliancePhospholipases A2ViscosityParticle SizeLiposomesBiophysical PhenomenaTemperatureSolubilityBiophysicsProtein Structure, SecondaryCalorimetry, Differential ScanningPolyethylene GlycolsLipaseLauratesMembrane FluidityModels, BiologicalSodium Dodecyl SulfateStatic ElectricityLipidsProtein ConformationPolymersProtein BindingLiquid CrystalsOctanesTensile StrengthMicroscopy, Scanning TunnelingMolecular Sequence DataColipasesAlkanesMolecular StructureCattleAmino Acid SequenceMicroscopy, Atomic ForceComputer SimulationBronchoalveolar LavageSilicon DioxideHydrogen-Ion ConcentrationWettabilitySolventsSphingomyelinsPeptidesTime FactorsMicroscopy, Electron, ScanningSpectroscopy, Fourier Transform InfraredFluorocarbonsElasticityPneumocytesSpectrometry, FluorescenceDimyristoylphosphatidylcholineMembrane LipidsPoloxamerAgkistrodonMacrophages, AlveolarPhosphorylcholineSwineProtein Structure, TertiaryElectrochemistry