Figure 1 (IMAGE) Higher Education Press Caption Figure 1 Credit Kemo JIN , Nico HEERINK , William J. DAVIES , Jianbo SHEN , Yifeitong ZHANG , Yong HOU , Yaqiao ZHAO , Zhengxiong ZHAO, Fusuo ZHANG 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.