1. Department of Microbiology and Immunology, University of Louisville, Louisville, Kentucky, USA
2. Center for Predictive Medicine for Biodefense and Emerging Infectious Diseases, University of Louisville, Louisville, Kentucky, USA
3. Department of Molecular Biology, University of California at San Diego, La Jolla, California, USA
4. Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA
5. Department of Biology, University of Louisville, Louisville, Kentucky, USA