Masao Nakagawa (IMAGE) Hokkaido University Caption Masao Nakagawa (center), corresponding author of the study, with members of the lab (Photo; Masao Nakagawa). Credit Masao Nakagawa Usage Restrictions This image is copyrighted but may be used to report this press release if credited as instructed. 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.