Tubulin network of a 3T3 fibroblast immuno-labeled with QD800 quantum dots. Panel A) original image taken from the average of 2000 frames of a wide-field microscope setup. White lines indicate locations where cross-section were taken for all images in the upper panel. B) XC-SOFI image featuring twice more pixels than the original image and a resolution enhancement of a factor of square root of 2. For details, see Dertinger et al., Opt. Express 18, 18875 (2010).