(A) Endocytic clathrin dynamics is imaged at the ventral surface of a BSC-1 cell during microaspiration (begins at t=180s). (B) Clathrin coat growth rate distributions are assembled for each time point of the movie. The distributions get more peaked as the clathrin coat dynamics slow down (Ferguson et al., 2016). (C) The standard deviation (SD) of the growth rate distributions (shown in B) is plotted against time. Also shown are the time variations of the average clathrin lifetime (D), formation (E) and conclusion (F) densities.