TracheaTracheal NeoplasmsTracheal DiseasesTracheal StenosisGuinea PigsMuscle, SmoothCell DivisionBronchiMuscle RelaxationLarynxIntubation, IntratrachealMuscle ContractionRespiratory SystemMucusTracheotomyBronchoscopyEpitheliumLungHistamineAirway ObstructionStem CellsTracheitisSRS-AMitosisDrosophila ProteinsExocrine GlandsCell DifferentiationMethacholine CompoundsBronchial DiseasesNeurokinin ATracheostomyDrosophilaBronchial NeoplasmsSubstance PModels, BiologicalParasympatholyticsTime FactorsParasympathetic Nervous SystemMolecular Sequence DataVagus NerveTracheoesophageal FistulaLaryngeal NervesCell CycleAtropineLaryngeal CartilagesAcetylcholineMucous MembraneTachykininsMucociliary ClearanceElectric StimulationFiber Optic TechnologyMutationIsoproterenolAsymmetric Cell DivisionAporphinesDogsMorphogenesisCapsaicinAirway ResistanceRespiratory MucosaCytokinesisGene Expression Regulation, DevelopmentalCarbacholJuvenile HormonesCell LineageEpithelial CellsThyroid CartilageLaryngoscopyBromodeoxyuridineMicroscopy, ElectronPhenotypeSpindle ApparatusIndomethacin