Figure 4From: On the Enhanced Antibacterial Activity of Antibiotics Mixed with Gold Nanoparticlesa Zones of inhibition of the growth ofE. coli K12 upon application of gentamicin (1) and gentamicin–NP mixtures at particle concentrations of 0.1 (2), 0.5 (3), and 1.0 mM (4).b A diagram showing the averaged inhibition-zone diameters for samples 1–4Back to article page