Research Article

Comparison between Intra-Articular Injection of Infrapatellar Fat Pad (IPFP) Cell Concentrates and IPFP-Mesenchymal Stem Cells (MSCs) for Cartilage Defect Repair of the Knee Joint in Rabbits

Figure 2

The surface markers of IPFP-MSCs isolated from three rabbits characterized by flow cytometry in passage 3: no expression of CD45 and strong expression of CD44, CD90, and CD105.