1 Department of Cell Biology, Duke University Medical Center, Durham, NC.
2 Department of Cell Biology, Duke University Medical Center, Durham, NC; Department of Pulmonary, Allergy and Critical Care Medicine, Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC. Electronic address: jledford@deptofmed.arizona.edu.
3 Department of Pulmonary, Allergy and Critical Care Medicine, Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC.
4 Department of Pathology, Immunology, Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC.