1. Department of Microbiology and Immunology, College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania.
2. Department of Microbiology and Immunology, The University of Miami School of Medicine, Miami, Florida.
3. Department of Microbiology and Immunology, and Institute for Molecular Medicine and Infectious Disease, Center for Molecular Virology and Neuroimmunology, Center for Cancer Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania.
4. Vital Probles, Inc., Mayfield, Pennsylvania.
5. ,3 Department of Microbiology and Immunology, and Institute for Molecular Medicine and Infectious Disease, Center for Molecular Virology and Neuroimmunology, Center for Cancer Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania.