Response to Damage from a Heart Attack in the Mouse Border Zone (image) Hubrecht Institute Share Print E-Mail Caption Mouse heart tissue from the border zone of the heart after a heart attack (left) and an undamaged heart (right). In the border zone of the damaged heart, the protein c-Jun (green) moves to the nucleus to do its job as a transcription factor, suggesting that this protein is involved in the response to a heart attack. Credit Marie Gunthel, © Amsterdam UMC Usage Restrictions The image may only be used with the appropriate caption and credit. Share Print E-Mail 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.