Methacholine ChlorideHistamineMethacholine CompoundsBronchoconstrictor AgentsReceptors, Histamine H1Bronchial Provocation TestsHistamine ReleaseReceptors, Histamine H2Receptors, HistamineHistamine AntagonistsHistamine AgonistsHistamine H1 AntagonistsReceptors, Histamine H3Bronchial HyperreactivityBronchoconstrictionHistamine H2 AntagonistsAsthmaAirway ResistanceForced Expiratory VolumeHistamine N-MethyltransferaseBronchiPyrilamineMethylhistaminesRespiratory HypersensitivityAdministration, InhalationHistidine DecarboxylaseDimapritHistamine H3 AntagonistsHistamine AgentsParasympathomimeticsCimetidineTracheaChlorpheniramineBronchodilator AgentsAllergensRespiratory Function TestsImmunoglobulin ELungAlbuterolDose-Response Relationship, DrugGuinea PigsMast CellsMetiamideVital CapacityMuscle, SmoothDiphenhydramineAerosolsOvalbuminp-Methoxy-N-methylphenethylamineSkin TestsSpirometryHypersensitivity, ImmediateAtropineMuscarinic AgonistsHypersensitivityEosinophilsBasophilsBronchoalveolar Lavage FluidToluene 2,4-DiisocyanateBronchial SpasmPeak Expiratory Flow RateLung ComplianceRespiratory MechanicsRespiratory SystemNasal Provocation TestsBronchitisCromolyn SodiumIntradermal TestsReceptors, MuscarinicRespiratory SoundsTerfenadineMuscle ContractionImpromidineThioureaPlethysmography, Whole BodyNebulizers and VaporizersMaximal Midexpiratory Flow RateDouble-Blind MethodRhinitisCetirizinePentagastrinAnaphylaxisGastric JuiceAsthma, Exercise-InducedCross-Over StudiesBurimamideAnti-Asthmatic AgentsRhinitis, Allergic, PerennialRhinitis, Allergic, SeasonalAdenosine MonophosphatePulmonary VentilationLung Volume MeasurementsAcetylcholineAuscultationHistamine H1 Antagonists, Non-SedatingAnti-Allergic AgentsInhalationHyperventilationAirway ObstructionSkiing