Memo from T. J. Snape to Dr. R. S. Lane, BPL, dated 16/07/86, re the non-compliance with the CSM recommendations on plasma product, dated June 1986. Memo from Dr. R. S. Lane, BPL, to Dr. T. Snape, dated 25/06/86, re the alignment of BPLs procedures with the recommendations set out on CSMs letter on testing of plasma and products for HBs antigen and anti-HIV.