Peptide hormone in killifish muscle (IMAGE) The Hebrew University of Jerusalem Caption Example of ectopically-expressed peptide hormone in killifish muscle tagged with a fluorescent protein. Credit Eitan Moses Usage Restrictions none 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.