title: Letter: Alpha-adrenoceptor-blocking drugs in asthma.
mesh_terms: D000317:Adrenergic alpha-Antagonists / Q000494:pharmacology / Q000627:therapeutic use*; D000318:Adrenergic beta-Agonists / Q000494:pharmacology; D000818:Animals; D001249:Asthma / Q000188:drug therapy*; D001980:Bronchi / Q000187:drug effects; D004357:Drug Synergism; D006168:Guinea Pigs; D006801:Humans; D066298:In Vitro Techniques; D014132:Trachea / Q000187:drug effects
chemical_list: D000317:Adrenergic alpha-Antagonists; D000318:Adrenergic beta-Agonists