Supplementary Figure 10: The axial profile of four randomly selected fibrils from four plaques in Supplementary Fig. 7.

Four fibrils from panels A, E, F and H were measured. The numerical values in each plot are the FWHM of each profile in nanometers. The diameters of the plaques were roughly measured to be 12, 17, 11 and 11 µm for panels A, E, F and H, respectively.