Chondrocytes from T-LE Allografts and fresh articular cartilage were recovered and expanded in culture. The chondrocytes were stained for chondrogenic markers CD49a, CD44, and immunogenic hematopoietic stem cell marker CD45. The chondrocytes show very little to no expression of CD45. The expanded chondrocytes show high expression of CD49a and CD44. The green and red histograms represent the isotype control and receptor expression profiles for each antibody investigated. The percent positive for each marker is represented on the respective histogram.