title: Theophylline benefits and difficulties.
mesh_terms: D003331:Coronary Vessels / Q000187:drug effects*; D006801:Humans; D007261:Infusions, Intra-Arterial; D009203:Myocardial Infarction / Q000188:drug therapy*; D013300:Streptokinase / Q000008:administration & dosage*
chemical_list: D013300:Streptokinase