14th Conference on Retroviruses and Opportunistic Infections – Los Angeles, February 25-28, 2007 (abstract 503) D. Rey, P. Chavanet, M.P. Schmitt, G. Hoizey, P. Meyer, G. Peytavin, B. Spire, B. Hoen, C. Allavena, M. Diemer, T. May, J.L. Schmit, M. Duong, V. Calvez, J.M. Lang