The cell viability was evaluated with MTT chromatometry and cell growth curve was generated. Flow cytometry was performed for cell cycle analysis, and acridine orange staining was utilized for cell aging evaluation.

• MTT比色法测细胞活性并绘制细胞生长曲线,流式细胞仪测定细胞周期,丫啶橙染色检测细胞的衰老;