Blinking DNA Barcodes (image) Duke University Share Print E-Mail Caption These tiny points of light might look like stars twinkling in the sky. But in reality they're different molecules of light-up DNA, blinking on and off as they bind and unbind under a microscope. Credit Shalin Shah, Duke University Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.