The Inductive Effect of Bone Morphogenetic Protein-4 on Chondral-Lineage Differentiation and In Situ Cartilage Repair* W$ _! p+ Q) |2 C% y
http://www.liebertonline.com/doi/abs/10.1089/ten.TEA.2009.0681?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed