[1] CHU Purpan, Immunol Lab, F-31059 Toulouse, France
[2] Etab Transfus Sanguine Pyrenees Garonne, Lab Immunohematol, F-31027 Toulouse, France
[3] New York Blood Ctr, New York, NY 10021 USA
[4] NYU, Med Ctr, Lab Expt Med & Surg Primate, New York, NY 10016 USA