Report of SNBTS Visits to CRTS Lille 9-11 July 1990 by Peter Foster and Ronald McIntosh. Report gives details on resources and facilities, the process of producing Factor VIII including steps to prevent virus activation, further comments on the Lille Factor VIII process, other products, conclusions, recommendations and appendices. Appendix 8.1 is a diagram of a virus inactivation containment suite. Appendix 8.2 gives a method sheet for FVIII process from cryoppt processing to sterile filtration. 8.3 gives details on the freeze drying cycle. 8.4 gives Analytical methods. 8.5 gives detail on clinical data used to validate VIII C assay methodology table of detailed clinical assay data and full manuscript.