[1] Univ Med Berlin, Charite, Biomed Res Bldg, D-13353 Berlin, Germany
[2] Consejo Nacl Invest Cient & Tecn, Inst Biol & Med Expt, Immunopathol Lab, RA-1428 Buenos Aires, DF, Argentina
[3] Univ Med Berlin, Charite, Dept Med, Div Hepatol Gastroenterol & Endocrinol, D-13353 Berlin, Germany
[4] Univ Granada, Fac Med, Dept Bioquim & Biol Mol, Unidad Immunol, E-18012 Granada, Spain
[5] Univ Jena, Dept Obstet, Placenta Labor, D-07740 Jena, Germany
[6] Univ Paris 06, Inst Jacques Monod, Ctr Natl Rech, Dept Biol & Dev,UMR 7592, F-75251 Paris, France
[7] Univ Paris 07, F-75221 Paris 05, France
[8] Univ Pecs, Sch Med, Hungarian Acad Sci, Dept Med Microbiol & Immunol,Reprod & Tumor Immun, H-7643 Pecs, Hungary
[9] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Quim Biol, RA-1428 Buenos Aires, DF, Argentina