Figure 4.

Cell viability of Human embryonal kidney cell line 293T cells labeled with different concentration of QDs (mg Cd per mL) for 24 h at 37°C as measured by an MTT assay. The error bars show the standard deviations.

Zhai et al. Nanoscale Res Lett 2011 6:31   doi:10.1007/s11671-010-9774-z