Figure 5: HR-TEM images of AgNPs formed by Nocardiopsis sp. MBRC-1. (a) 10 nm scale, (b) 2 nm scale and selected area diffraction pattern. (c) Particle-size distribution under unoptimized conditions. The particle-size distribution revealed that the particles ranging from 30 to 90 nm had the maximum intensity, and thereafter the intensity was reduced. The average particle size was found to be 45 ± 0.15 nm.