This article was republished on February 23, 2016 to remove or replace copyrighted material and images with privacy issues in two Supporting Information files, S1 PowerPoint and S2 PointPoint. In S2 PowerPoint, the spelling of “Stanley Prusiner” was also corrected. The publisher apologizes for the errors. Please download these files again to view the correct version. The republished, corrected files are provided here for reference.
Republished, corrected file.
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