Affiliation: | 1. Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal.; 2. Instituto de Microbiologia e Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.; 3. Departments of Medicine, Brigham and Women''s Hospital and Harvard Medical School, Boston, Massachusetts, United States of America.; 4. EMBL c/o DESY, Hamburg, Germany.; University of Southern California Keck School of Medicine, United States of America, |