Quantum dots get a second chance to shine

A new look at colorful semiconductor particles for visualizing living cells

tiny semiconductor particles

DAZZLING DOTS  Tiny semiconductor particles called quantum dots light up mouse intestines in this microscope image. Red and green represent proteins illuminated by fluorescing quantum dots. Cell nuclei are stained blue with a traditional dye not involving quantum dots.

Provided by Thermo Fisher Scientific. Image by Thomas Deerinck and Mark Ellisman/National Center for Microscopy and Imaging Research

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