Figure 1 (IMAGE) University of Tsukuba Caption Photoirradiation drives the pyloric opening. Images of five seconds (sec) and 1 min 30 sec Credit University of Tsukuba Usage Restrictions Unauthorized use is prohibited 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.