Figure 1From: Human multipotent mesenchymal stem cells improve healing after collagenase tendon injury in the rat Histology. Hematoxylin-eosin sections show the improvement of tendon ultrastructure in control (A-C) and hMSC-treated (D-F) groups 2, 4 and 6Â weeks after tendon injury. Better organization of the extracellular matrix was observed after hMSC treatment compared to the saline-treated tendons (Scores A-7, B-12, C-13, D-11, E-14, F 17). The formation of cartilage and bone was confirmed by collagen II staining, 6Â weeks after injury (G,H). Mesenchymal stromal cells survived at the site of the lesion as confirmed by MTCO2 staining (I).Back to article page