CapillariesPulmonary AlveoliElectrophoresis, CapillaryCapillary ActionLungCapillary PermeabilityHemangioma, CapillaryCapillary ResistancePulmonary SurfactantsCapillary ElectrochromatographyTooth SocketCapillary Leak SyndromeBronchiolesPulmonary Alveolar ProteinosisMammary Glands, AnimalPulmonary EdemaSurface TensionPulmonary CirculationLung ComplianceCapillary FragilityMicrocirculationRetinal VesselsMicroscopy, ElectronBronchiPulmonary Surfactant-Associated ProteinsLung DiseasesLung Volume MeasurementsAerosolsEpitheliumAlveolar ProcessBlood-Air BarrierBasement MembraneBronchoalveolar Lavage FluidNeovascularization, PhysiologicCapillary TubingEpithelial CellsPulmonary Gas ExchangeRespiratory Distress Syndrome, AdultPulmonary AtelectasisPhysical PhenomenaRats, Sprague-DawleyElastic TissueMacrophages, AlveolarTime FactorsAir PressureEndotheliumEndothelium, VascularCorrosion CastingPulmonary Surfactant-Associated Protein COxygenPleuraKidney GlomerulusModels, BiologicalInstillation, DrugSilicon DioxideImmunohistochemistryNailsDisease Models, AnimalHistological TechniquesMice, Inbred C57BLMicroscopic AngioscopyRespiratory SystemLung InjuryPneumocytesPulmonary Diffusing CapacityMicroscopy, Electron, ScanningAnimals, NewbornHyperoxiaLactationTotal Lung CapacityTidal VolumeRespiratory MechanicsPulmonary EmphysemaBronchoalveolar LavagePulmonary Surfactant-Associated Protein ARats, WistarCleft LipPericytesPneumoniaPulmonary FibrosisDogsRespiratory MucosaRespirationParticle SizeMaxillary NeoplasmsProteolipidsTracheaTherapeutic IrrigationPulmonary Wedge PressurePhysicsEmphysemaWeightlessness SimulationVentilator-Induced Lung InjuryLipidosesCells, CulturedRegional Blood FlowPressureHistocytochemistryChromatography, GasAir