Quantification of the area occupied by RPE1 cells on the substrate (top left), F-actin content at the centrosome (top right) polymerized tubulin at the centrosome (bottom left) and in the entire cell (bottom right) for the three conditions of cell adhesion described in (B). Measurements came from 3 independent experiments with more than 60 analyzed cells in each. Errors bars represent standard deviations. F-actin and microtubule contents were compared using Mann-Whitney test, and variations of the cell area were compared using unpaired t-test. 