Figure 7From: Long-term exposure of CdTe quantum dots on PC12 cellular activity and the determination of optimum non-toxic concentrations for biological useConfocal image. Fluorescent confocal image and corresponding differential interference contrast (DIC) images of PC12 cells exposed to a 10-7M concentration of QDs (A), 10-9 M concentration of QDs (B) and a control sample with no QDs (C) following 72 hours of co-incubation. Scale bar = 50 μm.Back to article page