Sonny Perdue views pollen under microscope

Sonny Perdue views pollen under microscope

Sonny Perdue views pollen under microscope

U.S. Secretary of Agriculture Sonny Perdue views pollen under a microscope as Distinguished Professor of Entomology Christina Grozinger (left) looks on. Perdue visited the Center for Pollinator Research and other Penn State facilities on Jan. 24 as part of a Pennsylvania tour to unveil USDA's legislative and farm bill principles.

Image: Michael Houtz
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