1. State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
2. School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
3. National Joint Local Engineering Laboratory for Cell Engineering and Biomedicine Technique Guizhou Province Key Laboratory of Regenerative Medicine Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences) Center for Tissue Engineering and Stem Cell Research Guizhou Medical University Guiyang 550004 PR China