Histograms show the quantifications of the amount of polymerized fluorescent tubulin (right, values were normalized with respect to the mean of control condition) and filamentous actin at the centrosome (left, values correspond to the fraction of fluorescence in a 2-micron-wide area around the centrosome relative to the total fluorescence in the cell). Measurements were pooled from 3 independent experiments; DMSO: n= 91, CK666: n= 82, SMIFH2: n= 74, latrunculinA: n= 96. Error bars correspond to standard deviations. P values were calculated with Mann-Whitney test. 