[1] FAC MED MARSEILLE, INSERM, U399, F-13385 MARSEILLE 05, FRANCE
[2] INST TROP MED, SERV SANTE ARMEES, F-13998 MARSEILLE, FRANCE
[3] INST PASTEUR, F-75724 PARIS, FRANCE
[4] UNIV EDINBURGH, INST CELL & MOL BIOL, EDINBURGH EH9 3JR, MIDLOTHIAN, SCOTLAND
[5] UNIV EDINBURGH, INST CELL ANIM & POPULAT BIOL, EDINBURGH EH9 3JT, MIDLOTHIAN, SCOTLAND