Institution: | 1. Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, the Graduate University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, P. R. China (phone: +86-931-4968208;2. fax: +86-931-8277088);3. College of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China;4. Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, P. R. China |