Figure 5From: Label-free in vitro toxicity and uptake assessment of citrate stabilised gold nanoparticles in three cell lines Dark-field image at 100x magnification of BEAS-2B cells incubated with 14 nm AuNPs for 1 hr. Cells were washed, fixed, and immobilised onto slides prior to image capture using the CytoViva system. Four focal planes, (A) through to (D), are observed as the focus of the microscope moves through the cell.Back to article page