Letter dated 31 January 1985 from Professor Ludlam to a doctor (hand-written name unclear but may be Dr Lane) about patients with haemophilia and their risk of developing AIDS as a result of transmission of the HTLV III virus in factor VIII and IX concentrates. He notes that he has sent an information sheet about AIDS to a patient with recommendations including that they should dispose of all syringes and needles into the Cinbins provided. Letter also notes that all Scottish factor VIII concentrates are now being heat treated under conditions that are believed to kill the HTLV III virus. He concludes that thus Scottish factor VIII no longer transmits the AIDS virus.