Muscle, SmoothTracheaBronchoconstrictionMyocytes, Smooth MuscleBronchiMuscle, Smooth, VascularBronchoconstrictor AgentsAirway ResistanceRespiratory SystemMuscle ContractionMethacholine ChlorideHistamineAsthmaAirway RemodelingGuinea PigsBronchial Provocation TestsBronchial HyperreactivityMethacholine CompoundsMusclesCells, CulturedLungMuscle RelaxationMuscle ProteinsAirway ObstructionRespiratory Physiological PhenomenaDose-Response Relationship, DrugBronchodilator AgentsNeurokinin AAlbuterolAdministration, InhalationAcetylcholineCalciumMuscle, SkeletalVagotomyAerosolsIpratropiumBronchial SpasmForced Expiratory VolumeSmooth Muscle MyosinsCarbacholMuscle Fibers, SkeletalIsometric ContractionProstaglandins DCromolyn SodiumMuscle DevelopmentReceptors, Neurokinin-2Vagus NerveBenzeneacetamidesIndomethacinAortaSignal TransductionHydantoinsRabbitsAtropineRespiratory MucosaTime FactorsRespiratory Function TestsActinsRNA, MessengerSubstance PTachykininsRespiratory MusclesChemokine CCL11Adrenergic beta-2 Receptor AgonistsSRS-ADogsPotassium ChloridePlatelet-Derived Growth FactorNedocromilOvalbuminMuscle TonusTerbutalineThromboxane A2PhosphorylationEnzyme InhibitorsCalcium SignalingCapsaicinMyosin Light ChainsRats, Sprague-DawleySerotoninCell DivisionIsoproterenolStress, MechanicalAllergensAdrenergic beta-AgonistsInterleukin-13CattleCholinergic AgonistsHypertrophyMuscle FatigueElectric StimulationMuscle DenervationMuscle Fibers, Fast-TwitchHexanolsGene Expression RegulationMembrane PotentialsCell ProliferationReceptors, Adrenergic, beta-2ImmunohistochemistryMuscle Cells