PT - JOURNAL ARTICLE AU - Margaret Nelson AU - Elizabeth J. Phipps AU - Pamela G. Watson AU - Jacqueline R. Watts AU - Roman Zwolenski TI - An automated passive haemagglutination technique suitable for the detection of hepatitis B virus antigen and antibody in blood donors AID - 10.1136/jcp.26.5.343 DP - 1973 May 01 TA - Journal of Clinical Pathology PG - 343--350 VI - 26 IP - 5 4099 - http://jcp.bmj.com/content/26/5/343.short 4100 - http://jcp.bmj.com/content/26/5/343.full SO - J Clin Pathol1973 May 01; 26 AB - A method is described for preparing purified hepatitis B antigen (HB Ag) viral antigen without density gradient centrifugation. A method for sensitizing human group O red cells with this preparation is given, together with the technical details of an automated passive haemagglutination technique suitable for the mass screening of blood donors for HB virus and anti-HB antibody.