Figure 2 (image) Kanazawa University Share Print E-Mail Caption Tokyo is indicated in black, but is not a major tea producing prefecture. Sashima region, Ibaraki prefecture, the site of a case study, is also indicated. Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. Share Print E-Mail 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.