[1] UNIV ALABAMA,DEPT PATHOL,263 TUMOR INST,UAB STN,BIRMINGHAM,AL 35294
[2] CNRS,INST EMBRYOL CELLULAIRE & MOLEC,F-94130 NOGENT SUR MARNE,FRANCE
[3] COLL FRANCE,NOGENT SUR MARNE,FRANCE
[4] HOWARD HUGHES MED INST,BIRMINGHAM,AL 35294
[5] UNIV ALABAMA,DEPT MICROBIOL,BIRMINGHAM,AL 35294
[6] UNIV ALABAMA,DEPT PEDIAT,BIRMINGHAM,AL 35294
[7] UNIV ALABAMA,DEPT MED,BIRMINGHAM,AL 35294
[8] UNIV MUNICH,INST ANIM PHYSIOL,D-8000 MUNICH 2,FED REP GER