Figure 2.
Cytotoxicity of Au18 NCs on P19 cells in lactate dehydrogenase (LDH) test. P19cells were incubated with culture medium containing NCs at concentrations between 0.006 ppm to 6.0 ppm and were compared to vehicle (H2O) treated cells (negative control) at 3, 24 and 48 h. Non-treated cells were also reported as no effect of vehicle was observed. Each experimental group consisted of n = 3 independent samples and error bars represent standard error of means. *** p < 0.001 as compare to vehicle treated cells.