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Characterization of hMSC. Deposition of GAG (A) and calcium (B) in passage 2 and 3 hMSC (P2, P3) in pellets cultured in either control, osteogenic or chondrogenic medium for 3 weeks. Flow cytometry with positive expression of the surface antigen CD 105 (C) and negative expression of CD34 (D) and CD 31 (E) on P2 hMSC.
