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Place
- Pennsylvania--Philadelphia120
- New York (State)--New York23
- Chemical Heritage Foundation17
- Washington (D.C.)17
- Massachusetts--Boston16
- Massachusetts--Cambridge12
- Pennsylvania--Ambler12
- Wisconsin--Saint Francis11
- California--Berkeley10
- California--San Diego9
- University of California, Berkeley9
- Washington (State)--Seattle9
- California--San Francisco8
- Connecticut--New Haven7
- Maryland--Baltimore7
- Rockefeller University7
- California--Palo Alto6
- California--San Diego--La Jolla6
- Cold Spring Harbor Laboratory6
- Delaware--Wilmington6