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United States Department of Agriculture

Agricultural Research Service

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Image Number D366-8

Technician Aisha Abdul-Wakeel places samples into a gas chromatograph while chemist Philip Pfeffer examines mass spectral data to measure the amount of isotopically labeled nitrogen that has been delivered from the mycorrhizal fungus to the host plant.

Photo by Peggy Greb.



640 pixels wide: (d366-8.jpg)




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Last Modified: 5/23/2006
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