Fig. 4From: Enhanced osteogenic potential of mesenchymal stem cells from cortical bone: a comparative analysisColony-forming unit (CFU-F) assay. a Graph showing the number of CFU-Fs (expressed as a measure of cell commitment) counted in AD-, BM-, and CBF-MSCs when cells were seeded at different densities. A marked reduction (**P < 0.01) in the number of colonies in CBF-MSCs compared with AD- and BM-MSCs. b Representative images showing colonies formed by CBF-MSCs that stained positively for alkaline phosphatase. Magnification: 20×. Scale bar: 20 μm. AD-MSC adipose tissue mesenchymal stem cell, BM-MSC bone marrow mesenchymal stem cell, CBF-MSC cortical bone fragment mesenchymal stem cells Back to article page