Page Banner

United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

Download a high-resolution (300dpi) digital image

Image Number K9823-1

Chemist Chris Hawkes prepares a hair specimen from a volunteer to analyze its selenium content. Hair can provide a history of dietary selenium intakes from a couple of weeks to many months in the past.

Photo by Peggy Greb.



640 pixels wide: (k9823-1.jpg)




Please visit our Image Gallery
Last Modified: 5/23/2006
Footer Content Back to Top of Page