Touchy Origins (IMAGE) Columbia University Caption The fluorescent-green features in this micrograph of the hairy skin of a mouse’s back reveals the presence of tactile sensory cells in the Mrgprb4 cell lineage. Credit Abdus-Saboor Lab/Zuckerman Institute Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.