| 1 (11) | Harvard-Smithsonian Center for Astrophysics | USA |  |
| 2 (67) | National Center for Biotechnology Information | USA | |
| 3 (92) | Smithsonian Institution * | USA | |
| 4 (114) | Lawrence Berkeley National Laboratory * | USA | |
| 5 (154) | SLAC National Accelerator Laboratory | USA | |
| 6 (158) | National Renewable Energy Laboratory | USA | |
| 7 (258) | Environmental Molecular Sciences Laboratory | USA | |
| 8 (334) | Argonne National Laboratory * | USA | |
| 9 (385) | Oak Ridge National Laboratory | USA | |
| 10 (411) | Brookhaven National Laboratory * | USA | |
| 11 (455) | Agriculture and Agri-Food Canada | CAN | |
| 12 (463) | Molecular Foundry | USA | |
| 13 (509) | Pacific Northwest National Laboratory * | USA | |
| 14 (590) | United States Department of Agriculture | USA | |
| 15 (635) | National Oceanic and Atmospheric Administration | USA | |
| 16 (658) | National Institute of Standards and Technology * | USA | |
| 17 (709) | US Environmental Protection Agency | USA | |
| 18 (748) | Los Alamos National Laboratory * | USA | |
| 19 (767) | Lawrence Livermore National Laboratory * | USA | |
| 20 (802) | National Aeronautics and Space Administration * | USA | |
| 21 (806) | Sandia National Laboratories, New Mexico | USA | |
| 22 (866) | United States Geological Survey | USA | |
| 23 (998) | National Research Council Canada * | CAN | |
| 24 (1013) | National Center for Atmospheric Research | USA | |
| 25 (1031) | US Food and Drug Administration | USA | |
| 26 (1036) | Center for Nanoscale Materials | USA | |
| 27 (1096) | US Naval Research Laboratory | USA | |
| 28 (1121) | U.S. Department of Energy * | USA | |
| 29 (1237) | National Energy Technology Laboratory | USA | |
| 30 (1263) | U.S. Air Force | USA | |
| 31 (1460) | Sandia National Laboratories, California | USA | |
| 32 (1505) | Jet Propulsion Laboratory | USA | |
| 33 (1509) | U.S. Army * | USA | |
| 34 (1510) | Oak Ridge Institute for Science and Education | USA | |
| 35 (1571) | Environment Canada | CAN | |
| 36 (1595) | National Research Council of the National Academies | USA | |
| 37 (1695) | Center for Integrated Nanotechnologies | USA | |
| 38 (1856) | National High Magnetic Field Laboratory | USA | |
| 39 (1884) | Ames Laboratory | USA | |
| 40 (2055) | Idaho National Laboratory | USA | |
| 41 (2057) | TRIUMF - National Laboratory for Particle and Nuclear Physics | CAN | |
| 42 (2358) | Natural Resources Canada | CAN | |
| 43 (2542) | NASA Goddard Space Flight Center | USA | |
| 44 (2603) | Joint Institute for Laboratory Astrophysics | USA | |
| 45 (2647) | Center for Drug Evaluation & Research | USA | |
| 46 (2727) | Glenn Research Center | USA | |
| 47 (2747) | Center for Food Safety and Applied Nutrition | USA | |
| 48 (3170) | NASA Ames Research Center | USA | |
| 49 (4387) | National Center for Toxicological Research | USA | |
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