HAQER Sequences Compared (IMAGE) Duke University Caption The fluorescent glow of mouse brain cells on the right indicates the effectiveness of a human-derived gene enhancer, HAQER0059, versus a 6 million year old version of the enhancer at left, which cannot activate genes in the same way because it is about 40 base pairs different from the human version. Credit Riley Mangan, Duke University 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.