Histological analysis of the cartilage defect area at 16 weeks post transplantation.

<p>Representative microscopic features of the cartilage defect area in the control group (defect only) and experimental groups (0.1 x 10⁷ cells/ml, 0.5 x 10⁷ cells/ml, 1.0 x 10⁷ cells/ml, 1.5 x 10⁷ cells/ml) at 16 weeks post transplantation. Sectioned specimens were stained with H & E, safranin-O, Collagen type II antibody, and Masson’s Trichrome. × 40. Scale bars = 200 μm.