81 The secretion of human hepatitis B virus is inhibited by the imino sugar, N-butyldeoxynojirimycin: Timothy M. Block1,2,+, Xuanyong Lu3, Frances M. Platt2, Graham R. Foster4, Wolfram H. Gerlich3, Baruch S. Blumberg2 and Raymond A. Dwek2 1) Jefferson Cancer Institute, Jefferson Medical College, Philadelphia, 19107, Pennsylvania, 2) Glycobiology Institute, University of Oxford, OX1 3QU,3) Institute of Medical Virology, Justus Liebig Universitat, Giessen, 6300, Germany, 4) Department of Medicine, Imperial College of Science, Technology and Medicine, St. Mary's Hospital, London, W2 1PG, UK, +) Presenting author