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Flow cytometry analysis of BM-MSCs cultured in the control medium αMEM and in a medium supplemented with BMP-2 and/or FGF-2 for 21 days. The expression of the MSC-specific antigens CD73 and CD105 was detected for all cells cultured in different conditions. Cells expressing the hematopoietic markers CD34, CD45, and HLA DR were absent or detected at low levels on day 21 of observation in all culture conditions.
