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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K9562-1

In studies to evaluate the connection between leptin and hunger, nutritionist William Horn and chemist Nancy Keim designed questionnaires to help volunteers assess their hunger. Here, the researchers review the study data.

Photo by Peggy Greb.



640 pixels wide: (k9562-1.jpg)




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Last Modified: 5/23/2006
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