Affiliation: | Key Laboratory of Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, Shaanxi Normal University, Xi'an, Shaanxi 710062, P.R. China;National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, Shaanxi 710062, P.R. China;College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, P.R. China |