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Image Number D2691-1

A section of the Prado Wetland, part of the vast network of waterways in the Santa Ana River Watershed. ARS microbiologist Mark Ibekwe and his university colleagues sampled 20 sites throughout the watershed for more than a year in a study to determine the origins of Escherichia coli strains.


Photo by Peggy Greb.

640 pixels wide: (d2691-1.jpg)

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