BM-MSCs osteogenic induction: alkaline phosphatase (AP) and von Kossa staining. After osteogenic induction cells showed a completely different morphology compared to untreated MSCs. (A, C): untreated control cells showing no staining for AP and von Kossa respectively (Magnification 10×). (B, D): AP and von Kossa positive staining in bone marrow-derived osteogenic cells. Magnification 20×.
Violini et al. BMC Cell Biology 2009 10:29 doi:10.1186/1471-2121-10-29