1. Department of Biology, University of Nebraska at Kearney, 2401 11th Ave., Kearney, NE 68849 (jacquesbj@unk.edu; shafferjj@unk.edu)
2. Department of Medical Microbiology and Immunology, Creighton University School of Medicine, 2500 California Plaza, Omaha, NE 68178 (TravisBourret@creighton.edu)