University of Texas Medical Branch-Galveston - Department of Biochemistry and Molecular Biology, University of Texas Medical Branch-Galveston - Department of Biochemistry and Molecular Biology, University of Texas Medical Branch-Galveston - Department of Microbiology and Immunology, Washington University in St. Louis - Department of Pathology and Immunology, University of Texas Medical Branch-Galveston - Department of Microbiology and Immunology, University of Texas Medical Branch-Galveston - Department of Microbiology and Immunology, University of Texas Medical Branch-Galveston - Department of Biochemistry and Molecular Biology, University of Texas Medical Branch-Galveston - Department of Biochemistry and Molecular Biology, University of Texas Medical Branch-Galveston - Department of Pathology, University of Texas Medical Branch-Galveston - Department of Pathology, University of Texas Medical Branch-Galveston - Department of Pathology, University of Texas Medical Branch-Galveston - Department of Microbiology and Immunology, Washington University School of Medicine - Department of Medicine, University of Texas Medical Branch-Galveston - Department of Microbiology and Immunology, University of Texas Medical Branch-Galveston - Department of Biochemistry and Molecular Biology and University of Texas Medical Branch-Galveston - Department of Biochemistry and Molecular Biology