Figure 1From: Selenite reduction by the obligate aerobic bacterium Comamonas testosteroni S44 isolated from a metal-contaminated soil C. testosteroni S44 reduced selenite to red elemental SeNPs. Growth of C. testosteroni S44 on LB plates without (A) or with 1.0Â mM sodium selenite (B). (C) SEM image of C. testosteroni S44 cells amended with 20Â mM sodium selenite, showing round elemental SeNPs and rod-shaped bacterial cells.Back to article page