Deep Needle Image (IMAGE) Duke University Caption A new “dual-axis” approach to OCT allows researchers to look deeper beneath biological tissue. Here, a needle point more than one millimeter beneath a mouse’s skin can be seen toward the bottom of the dual-axis image (left) but not in the standard image (right). The signal of the needle in both has been adjusted for better visualization of the needle. Credit Evan Jelly Usage Restrictions None License Original 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.