The dorsal raphe (IMAGE) University of California - San Diego Caption An image of the dorsal raphe, an area located in the brainstem, shows serotonergic neurons in green, a virally expressed TdTomato protein in red and colocalized cells in yellow. Spitzer Lab, UC San Diego Credit Spitzer Lab, UC San Diego Usage Restrictions Must be used in conjunction with Science paper on the brain and stress-induced fear 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.