Scattering, RadiationHepatocyte Growth FactorGene Transfer TechniquesAir MicrobiologyAerosol PropellantsNebulizers and VaporizersPhantoms, ImagingProto-Oncogene Proteins c-metEmbryo TransferGene Transfer, HorizontalParticle SizeAdministration, InhalationGamma CamerasAcid RainTransfer (Psychology)AtmosphereCone-Beam Computed TomographyInhalation ExposureHumidityLungTomography, Emission-Computed, Single-PhotonEquipment DesignTechnetiumFluorescence Resonance Energy TransferAir MovementsMonte Carlo MethodAdoptive TransferRNA, TransferImage Processing, Computer-AssistedLightPatient TransferPhospholipid Transfer ProteinsArtifactsSulfuric AcidsModels, StructuralTime FactorsFlow CytometryPowdersTransfer FactorTechnetium Tc 99m PentetateGenetic VectorsAir Pollutants, OccupationalFiltrationEnvironmental MonitoringConjugation, GeneticSmogRadiographic Image EnhancementMolecular Sequence DataCholesterol Ester Transfer ProteinsPhotonsNuclear Transfer TechniquesElectron TransportReproducibility of ResultsAir PollutantsKineticsGermaniumAlgorithmsGenetic TherapyTendon TransferNasal SpraysEquipment Failure AnalysisRespiratory Protective DevicesComputer SimulationTechnology, RadiologicSensitivity and SpecificityModels, BiologicalRadionuclide ImagingModels, TheoreticalVentilationRadiometryBeclomethasoneMeteorologyMetered Dose InhalersAlbuterolCells, CulturedAdenoviridaeParticulate MatterMice, Inbred C57BLCell LineX-RaysEscherichia coliDogsTomography, Emission-ComputedRadiographic Image Interpretation, Computer-AssistedMice, Inbred BALB CDry Powder InhalersImage EnhancementBronchodilator AgentsBase SequenceRespiratory SystemPlasmidsContainment of BiohazardsAsthmaChlorofluorocarbonsAmino Acid SequenceCell MovementSubtraction TechniqueRadiation DosageDisease Models, AnimalTemperature