AsthmaBronchial HyperreactivityInterleukin-13LungOvalbuminTh2 CellsAnti-Asthmatic AgentsAsthma, Exercise-InducedAdministration, InhalationPeak Expiratory Flow RateAsthma, OccupationalForced Expiratory VolumeRespiratory SoundsBronchodilator AgentsAllergensAdrenal Cortex HormonesHypersensitivityHypersensitivity, ImmediateRhinitisRespiratory Function TestsDisease Models, AnimalAlbuterolMethacholine ChlorideRhinitis, Allergic, PerennialEosinophilsBronchiSeverity of Illness IndexSpirometryBudesonideLeukotriene AntagonistsBeclomethasoneSkin TestsPrevalenceNebulizers and VaporizersAirway RemodelingBronchoconstrictor AgentsStatus AsthmaticusBronchitisBronchoconstrictionCase-Control StudiesRespiratory HypersensitivityQuestionnairesInflammationBronchoalveolar Lavage FluidAdrenergic beta-AgonistsRisk FactorsPyroglyphidaeCytokines