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United States Department of Agriculture

Agricultural Research Service

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Image Number K8557-11

In the late 1990s, physiologist Raymond Glahn developed the so-called artificial gut (several shown here), which allows researchers to simulate human digestion and nutrient absorption in the laboratory. He used the invention to screen 69 corn varieties for iron bioavailability to find those that might help battle iron deficiency in western Africa.

Photo by Keith Weller.

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Last Modified: 3/14/2017
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