Wakefulness-Promoting AgentsAlbuterolReceptors, Adrenergic, alpha-2Bronchodilator AgentsNebulizers and VaporizersPurinergic P1 Receptor AgonistsAdrenergic beta-AgonistsAdrenergic beta-2 Receptor AgonistsSerotonin Receptor AgonistsAdministration, InhalationIpratropiumDopamine AgonistsInhalation SpacersSerotonin 5-HT1 Receptor AgonistsRacepinephrineSerotonin 5-HT2 Receptor AgonistsMetered Dose InhalersAdenosine A1 Receptor AgonistsDose-Response Relationship, DrugBronchial SpasmGABA AgonistsGABA-A Receptor AgonistsAdenosine A2 Receptor AgonistsOzone DepletionGABA-B Receptor AgonistsAdrenergic alpha-2 Receptor AgonistsAsthmaCannabinoid Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsRats, Sprague-DawleyChlorofluorocarbonsPurinergic P2 Receptor AgonistsBronchoconstrictionAerosol PropellantsReceptors, Adrenergic, alphaalpha 1-AntitrypsinReceptors, Adrenergic, beta-2Receptors, Opioid, kappaAdenosine A3 Receptor AgonistsAdrenergic alpha-AgonistsHistamine AgonistsAdenosineMuscarinic AgonistsNicotinic AgonistsRespiratory Therapy Department, HospitalReceptors, Opioid, muSerotonin AntagonistsAerosolsPhenethylaminesReceptors, Dopamine D22,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineAdrenergic beta-3 Receptor AgonistsRats, WistarForced Expiratory VolumeHydrocarbons, FluorinatedHypoxia-Inducible Factor 1, alpha SubunitReceptors, Opioid, deltaBronchiolitisAnti-Asthmatic AgentsAdrenergic AgonistsQuinpiroleBaclofenReceptors, Purinergic P1Excitatory Amino Acid AgonistsCells, CulturedReceptors, Dopamine D1Drug IncompatibilityRadioligand AssayStereoisomerismForced Expiratory Flow RatesBenzazepines8-Hydroxy-2-(di-n-propylamino)tetralinPiperidinesSignal TransductionDouble-Blind MethodEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Time FactorsReceptor, Adenosine A2AMice, Inbred C57BLEquipment DesignCannabinoidsalpha7 Nicotinic Acetylcholine ReceptorReceptors, Adrenergic, alpha-1Receptors, OpioidMuscimolPropanolaminesAdrenergic alpha-1 Receptor AgonistsBeclomethasoneLigandsPyrrolidinesReceptors, SerotoninReceptors, NicotinicReceptors, Adrenergic, betaNaphthalenesCalciumCyclic AMPAdenosine-5'-(N-ethylcarboxamide)ClonidineCholinergic Agonists