University of Alabama at Birmingham - Department of Microbiology, University of Alabama at Birmingham - Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham - Department of Microbiology, University of Alabama at Birmingham - Department of Medicine, National Institutes of Health - Vaccine Research Center, National Institutes of Health - Vaccine Research Center, Government of the United States of America - Vaccine Research Center, University of Alabama at Birmingham - Department of Microbiology, University of Alabama at Birmingham - Department of Microbiology, Frederick National Laboratory for Cancer Research - AIDS and Cancer Virus Program, University of Alabama at Birmingham - Department of Medicine, University of Alabama at Birmingham - Department of Medicine, University of Alabama at Birmingham - Department of Medicine, National Institutes of Health - Vaccine Research Center, National Institutes of Health - Vaccine Research Center, University of Alabama at Birmingham - Department of Microbiology, Palacký University Olomouc - Department of Immunology, University of Alabama at Birmingham - Department of Biochemistry and Molecular Genetics and University of Alabama at Birmingham - Department of Microbiology