Fig. 7
From: Antibiofilm activity of biosynthesized silver and copper nanoparticles using Streptomyces S29
Tri-phenyl tetrazolium chloride (TTC) assay for studying the effect of (a) Ag-NPs at 0.25x, 0.5x, 1x, 2x, 4x, 8x and 16x  MICs and (b) Cu-NPs at 25%, 50% and 100% on mature biofilm of A. baumannii ATCC 19606, K. pneumoniae ATCC 51503, K. pneumoniae ATCC 51503, P. aeruginosa PAO1 standard strains and A. baumannii (A10, A11), K. pneumoniae (K7, K20) and P. aeruginosa (P2, P26) clinical isolates. Values represent the mean ± SD of three independent experiments (*, significant, P < 0.001)