TracheaBronchiBronchial NeoplasmsTracheal NeoplasmsBronchial DiseasesBronchoscopyBronchographyTracheal DiseasesMuscle, SmoothTracheal StenosisGuinea PigsBronchoconstrictionLungMuscle ContractionAirway ObstructionHemoptysisRespiratory SystemMuscle RelaxationCarcinoma, BronchogenicNeurokinin AIntubation, IntratrachealTachykininsMucusHistamineEpitheliumLarynxExocrine GlandsPulmonary AtelectasisBronchial ArteriesBronchial FistulaSubstance PForeign BodiesPneumonectomyTomography, X-Ray ComputedMethacholine CompoundsAcetylcholineAirway ResistanceMuscle TonusTracheobronchomegalyCapsaicinRespiratory MucosaRespiratory Tract NeoplasmsSRS-ACarcinoma, Adenoid CysticLung NeoplasmsTracheitisEndothelinsBronchoscopesFiber Optic TechnologyMucous MembraneTracheotomyAlbuterolSolanum glaucophyllumElectric StimulationMucociliary ClearanceCarbacholTracheoesophageal FistulaVagus NerveDose-Response Relationship, DrugEvans BlueIsoproterenolAerosolsBronchiectasisThoracic Surgical ProceduresViper VenomsMethacholine ChlorideIndomethacinDogsParasympathetic Nervous SystemRadiography, ThoracicThoracotomyBronchial SpasmPulmonary ArteryAtropineSwinePulmonary VentilationReceptors, EndothelinBronchodilator AgentsRespiratory System AbnormalitiesPiperidinesRespiratory Physiological PhenomenaAdrenergic beta-AgonistsCoughTime FactorsLaser TherapyBronchitisThiorphanPlasma Cell Granuloma, PulmonaryAsthmaBronchopneumoniaPulmonary Surgical ProceduresMucinsEndothelin-3Bronchogenic CystImmunohistochemistryBronchoconstrictor AgentsReceptor, Endothelin BNodose GanglionLeukotriene D4Esophagus