Mutation accessibility fuels influenza evolution (IMAGE) St. Jude Children's Research Hospital Caption Corresponding author M. Madan Babu, Ph.D. of St. Jude Department of Structural Biology. Credit St. Jude Children's Research Hospital Usage Restrictions No cropping 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.