Figure 1

Effects of β2-M treatment on the viability of HK-2 cells. HK-2 cells were grown to 80% confluence, and then, different concentrations of β2-M (5, 10, 25, and 50 μM) were added to the media for an additional 24, 48, and 72 h. The mean and SE of the absorbance at 490 nm for six replicates normalized to a control was calculated for each group, considering the absorbance at 490 nm of the control as 1. **P < 0.05 compared with the control.