engineered E. coli detects acidosis (IMAGE)
Caption
Rice University researchers engineered a strain of the gut bacteria E. coli to detect gastrointestinal acidosis. The organism produces fluorescent molecules that allow researchers to see it with standard optical equipment. Under normal conditions (left) it produces molecules that glow red. When it encounters acidic conditions (right), it glows green, and the brightness of the glow reflects the level of acidity.
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Image courtesy of Jeff Tabor/Rice University
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