microscopy image (IMAGE) Salk Institute Caption Neurons in the spinal cord (blue), including those that send signals about pain (green), captured using one of the new wearable microscopes. Credit Salk Institute Usage Restrictions with credit and related coverage. 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.