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Image Number D1896-6 |
In Stoneville, Mississippi, biologist Bobbie Johnson adds ammonium hydroxide to Aspergillus cultures to differentiate aflatoxin-producing strains (yellow and red) from nonproducers (off-white).
Photo by Stephen Ausmus.
640 pixels wide: (d1896-6.jpg)
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Last Modified: 08/27/2010
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