Minute of Regional Transfusion Directors meeting 144th meeting 25 October 1972 at Department of Health and Social Security. Re 1 provision of plasma or serum to be used as a biochemical reagent 2 the NBTS in the revised National Health Service 3 Australia HepatitisAssociated Antigen 4 AntiD immunoglobulin results of treatment 5 Medical Staff in Regional transfusion Centres