Figure 4
Rg1’s Effect upon Inflammatory Cytokine Secretion by BMSCs in Aged Rats. The BMSCs were collected on day 5 of passage 3. (A) Interleukin (IL)-6, (B) IL-2, and (C) tumor necrosis factor (TNF)-α. a: comparison with the control group (p < 0.05); b: comparison with the D-gal-administration group (p < 0.05). Each error bar represents the standard deviation (SD).