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Analysis of cell-surface markers in pBMSCs at different passages by flow cytometry. (A) Early-passage pBMSCs (passages 3–5); (B) middle-passage pBMSCs (passages 8–10); (C) late-passage pBMSCs (passages 14–16). Gates were drawn on the basis of isotype controls (black line), and positive expression is marked as black fill. Data are the mean±SEM, three replicates; p>0.05.
