Bacterial Litmus Test (IMAGE)

Georgia Institute of Technology

Bacterial Litmus Test

Caption

Georgia Tech graduate research assistant Daniel Watstein holds plates containing E. coli that are producing a purple pigment in response to levels of zinc. The bacterium could be used to detect nutritional deficiencies in resource-limited areas of the world. Purple would indicate low levels of the micronutrient.

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Credit: Rob Felt, Georgia Tech

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