Zebrafish Embryo (IMAGE) Garvan Institute of Medical Research Caption A study in zebrafish indicates that some genes linked to cancers in humans have been strictly regulated throughout evolution. Credit Michael Geng Usage Restrictions with credit License Licensed 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.