Effect of Zuoguiwan and Youguiwan on transforming growth factor beta1 and its signal transduction protein Smad2/3 in osteogenic induction of rat bone marrow mesenchymal stem cells 
Sun Yue-jiao, Song Nan, He Wen-zhi, He Li-juan, Ren Yan-ling
Chinese Journal of Tissue Engineering Research . 2014, (10): 1496 -1501 .  DOI: 10.3969/j.issn.2095-4344.2014.10.004