How Gene Therapy for Pain Will Work (IMAGE) Michigan Medicine - University of Michigan Caption The gene transfer vector (left) is injected into the skin in the area of pain (red line, right). From the skin, the vector is carried into sensory nerves and releases the inhibitory neurotransmitter locally in the spinal cord (red oval). Credit University of Michigan Usage Restrictions None 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.