Fig. 1From: In vitro biosynthesis of Ag, Au and Te-containing nanostructures by Exiguobacterium cell-free extractsMetal(loid) reduction by Exiguobacterium strains under aerobic and anaerobic conditions. Reduction assays of Ag (a), Au (b) and Te (c) were carried out as described in Methods. Blue, red and green bars represent pH 7.0, 8.0 or 9.0, respectively. (+), aerobic test, (−) anaerobic test. Bars represent the average of 3 independent trials. **, p < 0.01; *, p < 0.05; nd, not determined; ns, not significantBack to article page