Disclosed herein is a composition for the treatment of articular cartilage
damage or loss or defect. The composition for the treatment of articular
cartilage injury of the present invention includes (i) cellular
components separated, proliferated, and/or differentiated from the
umbilical cord blood, (ii) a culture medium; and (iii) a biocompatible
polymer. The composition has very superior ability of proliferation and
differentiation and easier to be collected and acquired.