1. Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
2. Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
3. Department of Pediatric Allergy and Immunology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
4. Lung Cell Biology Laboratory, Arkansas Children’s Research Institute, Little Rock, Arkansas, USA