LIMS1 and cancer: Although the creep response of all four cell lines still followed a weak power law independently of the amount of the applied force, we observed an increase in the stiffness with increasing force for cancer cells, such as MDA-MB-231 and MCF-7 cells, as well as mouse embryonic fibroblasts, such as PINCH-1 knock-out (PINCH-1−/−) cells and controls (PINCH-1fl/fl).