Effect of metformin on the cell cycle in USC.

<p>USPC-2 and USPC-1 cells were seeded in quadruplicate dishes, serum-starved for 24 h, and treated with metformin (or left untreated, controls) for 72 h. Cell cycle distribution was assessed by FACS analysis. The values in the table denote mean ± SEM;</p>*<p>p<0.05 versus control cells.