TracheaBronchiBronchial NeoplasmsTracheal NeoplasmsBronchial DiseasesBronchoscopyBronchographyTracheal DiseasesMuscle, SmoothTracheal StenosisGuinea PigsBronchoconstrictionLungMuscle ContractionRespiratory SystemAirway ObstructionHemoptysisMuscle RelaxationCarcinoma, BronchogenicNeurokinin AIntubation, IntratrachealTachykininsMucusHistamineEpitheliumLarynxExocrine GlandsBronchial ArteriesPulmonary AtelectasisBronchial FistulaSubstance PForeign BodiesPneumonectomyMethacholine CompoundsAirway ResistanceAcetylcholineTracheobronchomegalyMuscle TonusTomography, X-Ray ComputedCapsaicinRespiratory Tract NeoplasmsRespiratory MucosaSRS-ACarcinoma, Adenoid CysticTracheitisEndothelinsBronchoscopesLung NeoplasmsFiber Optic TechnologyMucous MembraneTracheotomySolanum glaucophyllumAlbuterolMucociliary ClearanceCarbacholVagus NerveTracheoesophageal FistulaEvans BlueElectric StimulationIsoproterenolAerosolsBronchiectasisViper VenomsMethacholine ChlorideThoracic Surgical ProceduresDose-Response Relationship, DrugIndomethacinParasympathetic Nervous SystemRadiography, ThoracicBronchial SpasmThoracotomyDogsAtropinePulmonary ArteryPulmonary VentilationReceptors, EndothelinBronchodilator AgentsSwineRespiratory Physiological PhenomenaRespiratory System AbnormalitiesAdrenergic beta-AgonistsPiperidinesCoughLaser TherapyThiorphanPlasma Cell Granuloma, PulmonaryBronchitisBronchopneumoniaAsthmaPulmonary Surgical ProceduresEndothelin-3MucinsBronchogenic CystBronchoconstrictor AgentsReceptor, Endothelin BNodose GanglionLeukotriene D4Glomus TumorEsophagusImmunohistochemistry