| 501 (4761) | Animal Health Research Institute | EGY |  |
| 502 (4831) | National Institute of Environmental Research | KOR | |
| 503 (4832) | Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences | RUS | |
| 504 (4854) | Institute of Cytology Russian Academy of Sciences | RUS | |
| 505 (4929) | Agencia Paulista de Tecnologia dos Agronegocios * | BRA | |
| 506 (4959) | Centre National de la Recherche Scientifique et Technologique * | BFA | |
| 507 (4977) | Egyptian Drug Authority | EGY | |
| 508 (4978) | Steadman Philippon Research Institute | USA | |
| 509 (5005) | Eusko Jaurlaritza Alaba | ESP | |
| 510 (5039) | Belgian Nuclear Research Centre | BEL | |
| 511 (5067) | Federal Scientific Research Center Crystallography and Photonics of Russian Academy of Sciences | RUS | |
| 512 (5086) | Japan Atomic Energy Agency | JPN | |
| 513 (5089) | Institute of Theoretical and Experimental Biophysics Russian Academy of Sciences | RUS | |
| 514 (5105) | National Centre for Radiation Research and Technology | EGY | |
| 515 (5125) | Federal Research Center of Nutrition, Biotechnology and Food Safety | RUS | |
| 516 (5130) | N.M. Emanuel Institute of Biochemical Physics Russian Academy of Sciences | RUS | |
| 517 (5175) | I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry Russian Academy of Sciences | RUS | |
| 518 (5180) | Comissao Nacional de Energia Nuclear * | BRA | |
| 518 (5180) | Israel Defense Forces * | ISR | |
| 520 (5194) | Imagerie Adaptative Diagnostique et Interventionnelle | FRA | |
| 521 (5200) | Pavlov Institute of Physiology Russian Academy of Sciences | RUS | |
| 522 (5201) | Nepalese Army Institute of Health Science | NPL | |
| 523 (5220) | Egyptian Atomic Energy Authority * | EGY | |
| 524 (5223) | N. N. Semenov Institute of Chemical Physics Russian Academy of Sciences | RUS | |
| 525 (5270) | Joint Institute for Nuclear Research | RUS | |
| 526 (5271) | Institute of Biomedical Problems Russian Academy of Sciences | RUS | |
| 527 (5274) | Institute for Higher Nervous Activity and Neurophysiology Russian Academy of Science | RUS | |
| 528 (5275) | Nuclear Materials Authority | EGY | |
| 529 (5278) | Research Institute for Fragrance Materials | USA | |
|
