by Public Library of Science Shown is an increased density of synapses (green) that contact motoneurons (purple) in the spinal cord of an injured animal after treatment with the small molecule TTK21-These are important for motor function. Credit: Franziska Mueller (CC-BY 4.0, creativecommons.org/licenses/by/4.0/) Currently, spinal cord injury does not have any effective treatments; physical rehabilitation can...