Abstract
1 The Edward Jenner Institute for Vaccine Research, Compton, Newbury RG20 7NN, UK
2 Institute of Medical Virology, Justus Liebig University, Giessen, Germany
3 Division of Microbiology and Infectious Diseases, The University of Nottingham, Nottingham, UK
4 Istituto di Ricerche di Biologia Moleculare P. Angeletti, Rome, Italy
5 CNRS-UPR2511, Institut Pasteur de Lille, Lille, France
6 MRC Virology Unit, Institute of Virology, Glasgow, UK