TracheaBronchiAirway ObstructionBronchial NeoplasmsAirway RemodelingAirway ResistanceTracheal NeoplasmsBronchial DiseasesBronchoscopyBronchographyTracheal DiseasesRespiratory SystemLungBronchoconstrictionMuscle, SmoothRespiratory MucosaTracheal StenosisGuinea PigsBronchial HyperreactivityAsthmaIntubation, IntratrachealAirway ManagementMucusMuscle ContractionHistamineLarynxMuscle RelaxationRespiratory HypersensitivityEpitheliumHemoptysisNeurokinin ABronchoalveolar Lavage FluidCarcinoma, BronchogenicExocrine GlandsTachykininsBronchial Provocation TestsEpithelial CellsRespiratory Physiological PhenomenaLaryngeal MasksAerosolsMucociliary ClearanceFiber Optic TechnologyRespiratory MechanicsBronchitisSubstance PPulmonary AtelectasisBronchial ArteriesPulmonary VentilationAlbuterolMethacholine CompoundsAcetylcholineTomography, X-Ray ComputedBronchodilator AgentsAdministration, InhalationBronchial SpasmCell DivisionRespiratory Function TestsTracheotomyLung ComplianceContinuous Positive Airway PressureCapsaicinBronchoscopesBronchial FistulaMuscle TonusForeign BodiesEosinophilsTracheitisDose-Response Relationship, DrugTime FactorsPneumonectomyCystic FibrosisMucous MembraneCoughSRS-ATracheobronchomegalyVagus NerveInhalationLung Volume MeasurementsBronchiectasisForced Expiratory VolumeRespiratory Tract NeoplasmsDogsLung Diseases, ObstructiveCells, CulturedMucinsCarbacholPneumoniaAir PressureEndothelinsEvans BlueCarcinoma, Adenoid CysticTracheostomyPharynxRespirationDisease Models, AnimalElectric StimulationIsoproterenolPulmonary AlveoliMice, Inbred BALB CImmunohistochemistry