Staining observation on complex mesochondrium of marrow-derived mesenchymal stem cells-TCP: It was found with TB staining that the complex of marrow-derived mesenchymal stem cells-TCP inside the joint cavity obviously had positive staining, which indicated that there were glycosidoprotein base formed. 骨髓基质干细胞-磷酸三钙复合体软骨基质特染观察结果:甲苯胺蓝染色发现,植入关节腔的骨髓基质干细胞-磷酸三钙复合体有明显阳性染色,表明有糖蛋白基质形成。