This image shows a mitotic PtK2 cell at metaphase, immunostained for microtubules (red) and kinetochores (green) with DNA stained blue. The image was obtained using structured illumination microscopy, which provides 'super-resolution' beyond the diffraction limit set by the wavelength of the illuminating light.

The micrograph was the 2012 winner in the high- and super-resolution microscopy category of the GE Healthcare Life Sciences Imaging Contest.