Airway ResistanceAsthmaAirway ObstructionAirway RemodelingBronchiRespiratory SystemBronchoconstrictionLungRespiratory MucosaPlethysmography, Whole BodyBronchial HyperreactivityLung ComplianceRespiratory MechanicsRespiratory Function TestsMethacholine ChlorideBronchoconstrictor AgentsLung Volume MeasurementsTracheaBronchodilator AgentsDrug ResistanceBronchial Provocation TestsAdministration, InhalationMuscle, SmoothPulmonary VentilationForced Expiratory VolumeInhalationBronchoalveolar Lavage FluidDrug Resistance, MicrobialEpithelial CellsHistamineRespiratory HypersensitivityDrug Resistance, BacterialSpirometryAlbuterolRespiratory Physiological PhenomenaAirway ManagementMucusNasal ObstructionFunctional Residual CapacityAir PressurePlethysmographyRhinomanometryAnti-Asthmatic AgentsHypersensitivityRespiratory SoundsEosinophilsDrug Resistance, NeoplasmAerosolsNasal MucosaIntubation, IntratrachealRespirationNoseCells, CulturedBronchial SpasmIpratropiumTidal VolumeVital CapacityBronchitisAllergensDrug Resistance, MultipleRhinometry, AcousticNasal CavityOscillometryNasal DecongestantsPositive-Pressure RespirationEpiglottisMucin 5ACDisease ResistanceLung Diseases, ObstructivePharynxCystic FibrosisVascular ResistanceRespiratory MusclesGuinea PigsPulmonary Disease, Chronic ObstructiveTime FactorsDisease Models, AnimalCoughMyocytes, Smooth MuscleMice, Inbred BALB CNasal Provocation TestsAsthma, Exercise-InducedInflammationMaximal Expiratory Flow-Volume CurvesForced Expiratory Flow RatesDose-Response Relationship, DrugTotal Lung CapacityDrug Resistance, Multiple, BacterialDrug Resistance, ViralAnti-Bacterial AgentsSleep Apnea, ObstructivePneumoniaInterleukin-13ClemastineHeliumWork of BreathingCromolyn SodiumCystic Fibrosis Transmembrane Conductance RegulatorPeak Expiratory Flow RateMouth Breathing