Equol reverses the inhibition of cyclosporin A on the proliferation and osteoblastic differentiation of bone marrow mesenchymal stem cells through estrogen receptor/ nitric oxide / cyclic guanosine monophosphate signal pathway Chinese Journal of Tissue Engineering Research . 2010, (36): 6833 -6836 .  DOI: 10.3969/j.issn.1673-8225.2010.36.042