Figure 2: Mesenchymal quality of the engrafted BMSCs and injection procedure. (a) flow cytometry data depicting several conventional surface antigens of mesenchymal cells (CD34, CD44+, CD45−, and CD90+) prior to implantation (passage 4). (b) technique of intramedullary injection (left panel) and on the right panel, the arrow indicates the bandage on the surgical site after BMSC engraftment.