See Inside January 2012

What Is It?

Small flies

Courtesy of Yoosik Kim and Stanislav Y. Shvartsman Princeton University and Kwanghun Chung and Hang Lu Georgia Institute of Technology

Small flies: For this Kandinsky-like image, researchers stained cross sections of 20 fruit fly embryos with antibodies to reveal three distinct tissue types: muscle, nerve and skin. Recently included in Princeton University’s annual Art of Science ex­hibition, the image shows the progress made in this type of microscopy. The scientists, who come from Princeton and the Georgia Institute of Technology, developed a new micro­fluidic device that traps and vertically positions tiny objects faster than before.

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