RT-PCR analysis. Cells in the third cell passage were used. cDNA from other musculoskeletal cell types such as f, fibroblasts (passage 6), c, chondrocytes (passage 3) and o, osteoblasts (passage 2) were used for comparison. GAPDH was used for normalization. ED, enzymatic digestion, CM, cell migration. Each band represents one patient/LHB (n = 7).