Interaction between  -adrenergic stimulant and phosphodiesterase inhibiting drugs on the bronchial muscle.
D000318:Adrenergic beta-Agonists / Q000494:pharmacology*; D000818:Animals; D001980:Bronchi / Q000187:drug effects*; D001986:Bronchial Spasm / Q000139:chemically induced; D002082:Butylamines / Q000494:pharmacology; D000242:Cyclic AMP / Q000494:pharmacology*; D004357:Drug Synergism; D004983:Ethanolamines / Q000494:pharmacology*; D006168:Guinea Pigs; D006632:Histamine; D010627:Phenethylamines / Q000494:pharmacology*; D010726:Phosphodiesterase Inhibitors; D013806:Theophylline / Q000494:pharmacology*
D000318:Adrenergic beta-Agonists; D002082:Butylamines; D004983:Ethanolamines; D010627:Phenethylamines; D010726:Phosphodiesterase Inhibitors; D006632:Histamine; D013806:Theophylline; D000242:Cyclic AMP