صورة:EscherichiaColi NIAID.jpg

from http://en.wikipedia.org/wiki/Image:EscherichiaColi_NIAID.jpg

Escherichia coli: Scanning electron micrograph of Escherichia coli, grown in culture and adhered to a cover slip. Credit: Rocky Mountain Laboratories, NIAID, NIH

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This image is a work of the National Institutes of Health, part of the United States Department of Health and Human Services. As a work of the U.S. federal government, the image is in the public domain.