Figure 1. BM-hMSCs senescence phenotype and drug induction strategy. (A) Morphology of BM-hMSCs at passage 2 (p2), passage 8 (p8) and passage 13 (p13). Scale bar, 100 μm. (B) Trilineage differentiation of BM-hMSCs. Scale bar, 100 μm. (C) An illustration of the method used for drug treatment of hMSCs and evaluation system.