Figure 7
Apoptosis assay. Graph of APOTOX GLO Triplex assay showing the apoptosis of differentiated PC12 cells after 7, 12 and 17 days treated with red and orange QDs of gel and non-gel types along with controls. The cells were also treated with red and orange QDs of gel and non-gel types and neurites were subsequently grown for 10 days. Symbols *, § and ¤ denote examples of statistical significance in comparison with untreated cell controls using a one-way ANOVA (P < 0.05) by Tukey's mean comparison.