1. Center for Tropical and Emerging Global Diseases, University of Georgia, Paul D. Coverdell Center, Athens, Georgia 30602, USA
2. Department of Cellular Biology, University of Georgia, Paul D. Coverdell Center, Athens, Georgia 30602, USA
3. UMR CNRS 5539, Université de Montpellier 2, Montpellier, 34095, France