Hepatitis B Virus Surface Antigen (IMAGE) Duke-NUS Medical School Caption This is the hepatitis B virus surface antigen in cord blood cells from HBV positive mothers. Credit Michelle Hong / Duke-NUS Graduate Medical School Singapore Usage Restrictions Please give credit when using the image. 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.