Co-cultivation of bone marrow stromal cells with rabbit osteoblast-like cells in a Transwell chamber for osteogenic differentiation 
Zhang Shu-ying1, Duan Da-bo2, Zhang Li2, Wang Zhi-ying1
Chinese Journal of Tissue Engineering Research . 2012, (19): 3438 -3441 .  DOI: 10.3969/j.issn.1673-8225.2012.19.004