Effect of astragalus polysaccharides on peripheral endothelial progenitor cells via PI3K/Akt/eNOS signal pathway in patients with type 2 diabetes  
Xu Han-song, Wu Qing, Xie Xiao-yun, Kong De-ming
Chinese Journal of Tissue Engineering Research . 2011, (23): 4272 -4276 .  DOI: 10.3969/j.issn.1673-8225.2011.23.021