Barcode-labeled Genomic DNA (IMAGE) American Institute of Physics Caption DNA molecules extended in nano channels. The backbone has been stained in green, and sequence-specific sites have been labeled in red. Credit Julian Sheats/UMN Usage Restrictions This image may be used only with appropriate caption and credit. License Licensed content 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.