The supernatants were diluted 1:10 and deposited on freshly cleaved mica, incubated 10min, rinsed, and air dried overnight. Morphology of the aggregates in the supernatants was investigated using NT-MDT NTEGRA Prima atomic force microscope (AFM) in tapping mode in the air using NSG01 gold-coated single crystal silicon probe (resonant frequency ~150 kHz, force constant ~5.1 N/m). Image analysis was performed in Gwyddion version 2.62.