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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number D606-1

Microbiologist Evelyn Nystrom (center) indicates to technicians Briony Lachinski and Bryan Wheeler the fluorescent-stained lymphocytes in rectal tissues obtained from a calf experimentally infected with E. coli O157:H7 bacteria.

Photo by Stephen Ausmus.

640 pixels wide: (d606-1.jpg)

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Last Modified: 9/26/2006
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