Assertion: bacteria | /r/CapableOf | play major role
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text: [29–31]. Klaus and coworkers have shown that the bacterium Pseudomonas stutzeri AG259, isolated from a silver mine, when placed in a concentrated aqueous solution of silver nitrate, played a major role in the reduction of the Ag+ ions and the formation of silver nanoparticles (AgNPs) of well-defined size and distinct topography within the periplasmic space of the bacteria .