Fig. 5
Overview and characterization of AgPAA and AgPURE silver nanoparticles. (a and b) Representative measurement of particle size distributions of AgPAA and AgPURE in stock dispersion by Nanoparticle Tracking Analysis (NTA). (c, d and e) NTA particle size measurement of AgPAA in serum-containing cell culture medium (DMEM + 10% FCS), AgPURE in serum-containing cell culture medium, and AgPURE in serum-free cell culture medium (DMEM + 1% insulin/transferrin/selenium (ITS)) after 0 h, 24 h and 1 week of incubation under cell culture conditions (37 °C, humidified atmosphere and 5% CO2). (f, g and h) NTA measurement of the diffusion coefficients of AgPAA and AgPURE under the above conditions. Asterisks indicate relevant previous publications where further details on the characterization of AgPAA and AgPURE nanoparticles have been published: *[3] **[18, 26, 27] (see also reference section of this paper)