Markus Hardt (IMAGE) Forsyth Institute Caption Markus Hardt, Assistant Member of Staff at the Forsyth Institute, helped analyze the protein samples from humans, chimpanzees and gorillas for the study. Credit Photo by Matt Modoono/Forsyth Institute Usage Restrictions None 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.