Japonica Array (IMAGE) Tohoku University Caption The array contains 659,253 SNPs, including tag SNPs for imputation, SNPs of Y chromosome and mitochondria, and SNPs related to previously reported genome-wide association studies and pharmacogenomics. Credit Tohoku Medical Megabank Organization Usage Restrictions Credit: Tohoku Medical Megabank Organization 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.