Affiliation: | 1. Department of Medicinal Chemistry, Merck Research Laboratories, P.O Box 4, WP14‐3, West Point, PA 19486 (USA), Fax: (+1)?215‐652‐3971;2. Department of Molecular Systems, Merck Research Laboratories, West Point, PA 19486 (USA);3. Department of Alzheimer's Research, Merck Research Laboratories, West Point, PA 19486 (USA);4. Department of Structural Biology, Merck Research Laboratories, West Point, PA 19486 (USA);5. Department of Imaging, Merck Research Laboratories, West Point, PA 19486 (USA) |