Bacteria in the Hong Kong Subway (IMAGE) Cell Press Caption This diagram shows how the interconnectivity of subway lines both within Hong Kong and across to mainland China permit specific mixing patterns of bacteria between morning and evening. Credit Gianni Panagiotou Usage Restrictions Credit Required 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.