![]() Transmission electron micrograph of Thermus bacteria isolated from Witswatersand gold mine. These bacteria were capable of reducing Fe oxides (fine-grained material around the cells). This photo was taken on positively stained samples (with OsO4 and uranium acetate) by Hailiang Dong and Gordon Southam at Northern Arizona University. Photo from the Princeton Geomicrobiology Research Group's website--http://geo.princeton.edu/geomicrobio. |