The Scripps Research Institute, La Jolla, San Diego, CA, USA.|The Scripps Research Institute, La Jolla, San Diego, CA, USA.|The Scripps Research Institute, La Jolla, San Diego, CA, USA.|The Scripps Research Institute, La Jolla, San Diego, CA, USA.|The Scripps Research Institute, La Jolla, San Diego, CA, USA.|The Scripps Research Institute, La Jolla, San Diego, CA, USA.|The Scripps Research Institute, La Jolla, San Diego, CA, USA.