Bacterial litmus test measures micronutrients

A bacterium engineered to produce different pigments in response to varying levels of a micronutrient in blood samples could give health officials an inexpensive way to detect nutritional deficiencies in resource-limited areas of the world. This “bacterial litmus test,” which currently measures levels of zinc, requires no electrical equipment and the results are visible as simple color changes.

Provided by Georgia Tech

Runtime: 2:05

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