26RFa effects on osteogenic differentiation of human bone marrow mesenchymal stem cells 
Du Bin, Lin Qing, Liu Meng-jun, Chen Zhi-xin
Chinese Journal of Tissue Engineering Research . 2014, (10): 1508 -1513 .  DOI: 10.3969/j.issn.2095-4344.2014.10.006