Science and Engineering Expo 2012
WASHINGTON, D.C. — Abigail Lentz, a junior from Bel Air High School in Bel Air, Md., shows Ian Chen from Falls Church, Va., how to dissect a cow's eye at the 2012 USA Science and Engineering Expo here, April 29.

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Photo by: JC Delgadillo |  VIRIN: 120429-A-CE999-002.JPG