1. From the 1Division of Infectious Diseases and the
2. Université Catholique de Louvain, Institute of Life Sciences,
Louvain-la-Neuve, and
3. Barnard College, Columbia University,
New York, New York;
4. Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Wavre, Belgium
5. Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons, and