Fig. 6From: Biofabrication of gold nanoparticles by Shewanella speciesSelectivity of a SXM and b MR-1 immersed in only 300 ppm Au3+ (pink), only 100 ppm Ag+ (blue), 100 ppm Au3+ mixed with 100 ppm Ag+ (red), or 250 ppm Au3+ mixed with 100 ppm Ag+ (green)Back to article page