Erk activation in regenerating mouse ear (IMAGE) Hubrecht Institute Caption ERK activators from an implanted bead (white sphere) induce regenerating tissue (green) in the ear of a laboratory mouse. Credit Credit: Antonio Tomasso. Copyright: Hubrecht Institute. Usage Restrictions Image may only be used with the appropriate caption and credit 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.