Figure 11From: Long-term exposure of CdTe quantum dots on PC12 cellular activity and the determination of optimum non-toxic concentrations for biological usePicoGreen histograms. PicoGreen assay at 24, 48 and 72 hours illustrating the amount of DNA (ng/μl) measured from PC12 neurons following co-incubation with varying concentrations 10-7-(-9) M of the gel and non-gel QDs. From left to right, controls [positive, negative, background] are also shown. §denotes examples of statistical significance due to effect of gelatine, * denotes examples of statistical significance due to effect of concentration using a one- way ANOVA (p < 0.05) by Tukey's mean comparison.Back to article page