Spinal Cord Nerves (IMAGE) Salk Institute Caption This image shows nerves (labeled in green) that control body movements emerging from the spinal cord of a mouse (upper left, in cross section) and connecting to muscles in the base of the leg. The Salk researchers discovered that a combination of genes direct nerves to split in the leg (lower right) to make the proper connections with their target muscles during early development. Credit Image: Courtesy Dario Bonanomi, Salk Institute for Biological Studies Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.