Cell morphology of CNC exposed cell cultures. Confocal laser scanning microscopy analyzes visualising the actin cytoskeleton (red) and the nuclei (cyan) of control (a) or 1.57 μg/cm2 of either c-CNCs (b) or t-CNC (c) exposed cells. The images represent xy- and xz-projections. Yellow arrows indicate cells undergoing cell division. Scale bars are 30 μm.