Minutes of a Meeting on the Virological Aspects of the Safety of Blood Products, Held at NIBSC on February 7th, 1986. Topics discussed update on HTLV-I, HTLV-II and HTLV-III; methods to inactivate viruses (HT); inactivation of HTLV-III; NANB hepatitis; the plasma fractionation process; published data on inactivation of HTLV-IIII during fractionation; immunoglobulin; IV igG; patients with haemophilia A and B; von Willebrands; seroconversion with heated concentrates; transmission of hepatitis by concentrates; tests available for detecting antibodies of LAV/HTLV-III; tests of assays; NHS blood donation screening