Bronchoconstrictor AgentsBronchoconstrictionAirway ResistanceBronchiBronchial Provocation TestsMethacholine ChlorideMethacholine CompoundsHistamineForced Expiratory VolumeIpratropiumAsthmaGuinea PigsAdministration, InhalationBronchial HyperreactivityVagotomyNeurokinin AProstaglandins DBenzeneacetamidesCromolyn SodiumLungBronchodilator AgentsAerosolsRespiratory Function TestsHydantoinsAlbuterolNedocromilAirway ObstructionReceptors, Neurokinin-2Air MovementsDose-Response Relationship, DrugTerbutalineVagus NerveThromboxane A2TracheaPulmonary VentilationRespiratory SystemTachykininsSRS-AMuscle, SmoothNerve BlockNeprilysinAtropineIndomethacinCapsaicinSubstance PLung Diseases, ObstructivePropranololDouble-Blind MethodSpirometryProstaglandin D2Pulmonary Disease, Chronic ObstructiveHeart BlockAllergensVital CapacityOvalbuminSerotoninRhinomanometryAcetylcholineMuscle ContractionTime FactorsVentilationRespiratory MechanicsPulmonary EmphysemaNasal CavityGlottisPhonationLarynxBronchitisMaximal Expiratory Flow RateAir PressureRespirationInhalationSmokingTotal Lung CapacityLung Volume MeasurementsForced Expiratory Flow RatesBundle-Branch BlockPharynxExhalation