1. Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA.
2. NIAID Microbiome Program, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA.
3. Postdoctoral Research Associate Training Program, National Institute of General Medical Sciences, Bethesda, MD 20892, USA.