British researchers used medical gamma cameras to monitor the movement of the medical isotope technetium in soil samples. Through DNA analysis, the researchers found that some microbes, including those that use ferric iron, can put the isotope in place in soils to limit radioactivity spread. The use of the gamma cameras could help improve monitoring of how Tc and ferric iron function in complex soil environments, as well as contribute to the development of better methods to control radioactivity.

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