Affiliation: | 1Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America;2Molecular Microbiology Program, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts, United States of America;3Howard Hughes Medical Institute, Tufts University School of Medicine, Boston, Massachusetts, United States of America |