1. Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA.
2. Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
3. Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
4. Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria.
5. Mapp Biopharmaceutical Inc., San Diego, CA 92121, USA.
6. Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
7. Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA.