1. Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
2. Department of Molecular Medicine, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
3. Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California 92617, United States
4. Department of Immunology and Microbiology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
5. Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada