State Key Laboratory of Bioactive Substances and Functions of Natural Medicines;
Beijing Key Laboratory of Drug Delivery Technology and Novel Formulations;
Institute of Materia Medica;
Chinese Academy of Medical Sciences;
Beijing 100050;
China;
Beijing University of Aeronautics and Astronautics;
Beijing 100191;
China;
Lumbrokinase; Methoxy polyethylene glycol succinimidyl carbonate; Pegylation; Fibrinolytic activity;