Gong M, Bi Y, Jiang W, Zhang Y, Chen L, Hou N, Chen J, Li T. Retinoic acid receptor beta mediates all-trans retinoic acid facilitation of mesenchymal stem cells neuronal differentiation. The International Journal of Biochemistry & Cell Biology. 2013 Apr;45(4):866–75. doi: 10.1016/j.biocel.2013.01.002.