title: Tracheal relaxation from combinations of xanthines and of a beta 2-receptor agonist and xanthines.
authors.forename: C G
authors.initials: CG
authors.lastname: Persson
authors.forename: B
authors.initials: B
authors.lastname: Gustafsson
mesh_terms: D000818:Animals; D004347:Drug Interactions; D006168:Guinea Pigs; D008297:Male; D009130:Muscle, Smooth / Q000187:drug effects*; D013726:Terbutaline / Q000008:administration & dosage*; D013806:Theophylline / Q000008:administration & dosage*; D014132:Trachea / Q000187:drug effects*; D014970:Xanthines / Q000008:administration & dosage*
chemical_list: D014970:Xanthines; D013806:Theophylline; C034347:enprofylline; D013726:Terbutaline