| 1 | Biology | 2,237 | 543.6K | 113 | 33 |
| 2 | nucleic acids | 682 | 383.7K | 3 | 1 |
| 3 | Science | 1,139 | 333.3K | 278 | 69 |
| 4 | Molecular Biology | 1,681 | 306.3K | 102 | 23 |
| 5 | Physics | 932 | 299.7K | 432 | 86 |
| 6 | Natural history | 478 | 260.2K | 109 | 42 |
| 7 | Cytology | 1,187 | 210.7K | 46 | 33 |
| 8 | Cell Biology | 928 | 200.0K | 52 | 32 |
| 9 | Genetics | 565 | 195.5K | 95 | 11 |
| 10 | genome | 475 | 188.8K | 4 | 3 |
| 11 | Biochemistry | 1,501 | 136.2K | 226 | 80 |
| 12 | Virology | 378 | 112.2K | 115 | 43 |
| 13 | Computational Biology | 614 | 96.8K | 11 | 3 |
| 14 | Bioinformatics | 554 | 87.1K | 4 | 3 |
| 15 | Biotechnology | 250 | 59.1K | 437 | 66 |
| 16 | Bacteriology | 433 | 59.0K | 21 | 10 |
| 17 | Chemistry | 742 | 54.7K | 538 | 368 |
| 18 | Biochemical Engineering | 147 | 54.5K | 233 | 13 |
| 19 | Bioengineering | 150 | 54.2K | 374 | 41 |
| 20 | Human genetics | 211 | 50.9K | 127 | 119 |
| 21 | Crystallography | 224 | 37.7K | 21 | 10 |
| 22 | gene mapping | 213 | 37.3K | 46 | 10 |
| 23 | Molecular structure | 364 | 36.5K | 9 | 10 |
| 24 | Developmental Biology | 343 | 35.8K | 70 | 48 |
| 25 | Microbiology | 377 | 35.7K | 426 | 267 |
| 26 | proteins | 314 | 34.2K | 18 | 6 |
| 27 | Medicine | 397 | 31.5K | 715 | 457 |
| 28 | protein | 230 | 31.3K | 13 | 2 |
| 29 | DNA polymerases | 86 | 28.9K | 14 | 7 |
| 30 | X-ray crystallography | 164 | 25.8K | 6 | 12 |
| 31 | biological evolution | 66 | 22.9K | 327 | 59 |
| 32 | Molecular evolution | 61 | 21.6K | 162 | 21 |
| 33 | Embryology | 178 | 20.0K | 85 | 49 |
| 34 | Research | 320 | 18.7K | 655 | 419 |
| 35 | Biophysics | 246 | 18.3K | 554 | 225 |
| 36 | Cytogenetics | 128 | 16.5K | 85 | 56 |
| 37 | Growth | 145 | 16.4K | 75 | 62 |
| 38 | Developmental Genetics | 116 | 15.9K | 34 | 36 |
| 39 | Analytical Chemistry | 42 | 15.5K | 1393 | 133 |
| 40 | Genetic regulation | 108 | 15.4K | 49 | 36 |
| 41 | Gene expression regulation | 106 | 15.4K | 38 | 33 |
| 42 | Anatomy | 148 | 15.2K | 117 | 59 |
| 43 | Genomics | 238 | 15.1K | 113 | 71 |
| 44 | Cell differentiation | 152 | 13.6K | 111 | 106 |
| 45 | viral genetics | 77 | 13.3K | 27 | 30 |
| 46 | cell physiology | 128 | 13.1K | 78 | 43 |
| 47 | Immunity | 78 | 12.5K | 260 | 194 |
| 48 | Microscopy | 153 | 12.3K | 38 | 7 |
| 49 | Immunology | 105 | 11.9K | 613 | 362 |
| 50 | Hematology | 142 | 10.5K | 407 | 255 |
| 51 | Pharmaceutical Chemistry | 99 | 10.4K | 566 | 198 |
| 52 | enzymes | 84 | 9.7K | 83 | 11 |
| 53 | Host-parasite interactions | 57 | 8.8K | 146 | 75 |
| 54 | Neurology | 94 | 8.8K | 962 | 666 |
| 55 | Pharmacology | 28 | 8.0K | 1977 | 485 |
| 56 | Medical genetics | 107 | 7.7K | 383 | 332 |
| 57 | Histology | 73 | 7.1K | 213 | 73 |
| 58 | Chromosome mapping | 106 | 6.9K | 94 | 79 |
| 59 | Proteome | 112 | 6.7K | 39 | 36 |
| 60 | Neurons | 24 | 5.8K | 171 | 155 |
| 61 | Virulence | 50 | 5.1K | 158 | 120 |
| 62 | viruses | 71 | 4.8K | 227 | 200 |
| 63 | Bacterial infections | 20 | 4.8K | 177 | 58 |
| 64 | mycoses | 20 | 4.8K | 176 | 54 |
| 65 | Proteomics | 61 | 4.7K | 59 | 35 |
| 66 | RNA | 61 | 4.5K | 25 | 11 |
| 67 | Cancer | 74 | 4.5K | 676 | 564 |
| 68 | Genetic engineering | 69 | 4.5K | 201 | 149 |
| 69 | Genes | 24 | 3.6K | 253 | 35 |
| 70 | Recombinant DNA | 42 | 3.6K | 192 | 61 |
| 71 | Ecology | 39 | 3.6K | 1900 | 1282 |
| 72 | Molecular cloning | 41 | 3.5K | 174 | 55 |
| 72 | Genetic recombination | 41 | 3.5K | 166 | 54 |
| 74 | Microbial Ecology | 49 | 3.5K | 463 | 409 |
| 75 | Systems Biology | 83 | 3.3K | 75 | 58 |
| 76 | Protein engineering | 46 | 3.2K | 2 | 4 |
| 77 | Computational Chemistry | 9 | 3.2K | 320 | 69 |
| 78 | Neurophysiology | 40 | 3.1K | 770 | 587 |
| 79 | molecular design | 52 | 3.0K | 3 | 7 |
| 80 | Botany | 34 | 2.8K | 1309 | 847 |
| 81 | Metabolic diseases | 19 | 2.7K | 891 | 516 |
| 82 | Informatics | 49 | 2.7K | 39 | 42 |
| 83 | Immunotherapy | 16 | 2.6K | 743 | 315 |
| 84 | United Kingdom | 43 | 2.6K | 290 | 248 |
| 85 | Immune system | 14 | 2.6K | 404 | 299 |
| 86 | Homeostasis | 14 | 2.5K | 129 | 173 |
| 86 | Cell metabolism | 14 | 2.5K | 196 | 176 |
| 88 | Oncology | 18 | 2.5K | 869 | 669 |
| 89 | Cheminformatics | 38 | 2.5K | 7 | 14 |
| 90 | Bioorganic chemistry | 41 | 2.4K | 724 | 436 |
| 91 | Radiation | 39 | 2.4K | 419 | 142 |
| 91 | Synchrotron Radiation | 39 | 2.4K | 51 | 16 |
| 93 | Neurobiology | 36 | 2.3K | 469 | 413 |
| 94 | Environmental Microbiology | 23 | 2.3K | 354 | 221 |
| 95 | Stem cells | 23 | 2.3K | 493 | 253 |
| 96 | Molecular Microbiology | 27 | 2.2K | 220 | 202 |
| 97 | Molecular Genetics | 44 | 2.2K | 379 | 375 |
| 97 | Plant cells | 19 | 2.2K | 450 | 414 |
| 99 | Bioinorganic chemistry | 20 | 2.1K | 491 | 105 |
| 100 | Lipids | 10 | 2.1K | 659 | 180 |
| 101 | Clinical Chemistry | 38 | 2.1K | 756 | 565 |
| 102 | Data Mining | 48 | 2.0K | 127 | 208 |
| 103 | data collection | 44 | 1.9K | 50 | 145 |
| 104 | Evolution | 34 | 1.9K | 481 | 475 |
| 105 | nuclear magnetic resonance | 62 | 1.8K | 142 | 142 |
| 106 | Optics | 41 | 1.8K | 1541 | 808 |
| 107 | Meteorology | 29 | 1.8K | 660 | 573 |
| 108 | Organic Chemistry | 26 | 1.7K | 1256 | 694 |
| 109 | Oxidative stress | 8 | 1.7K | 664 | 144 |
| 110 | drug development | 10 | 1.7K | 477 | 246 |
| 111 | Pharmacogenetics | 22 | 1.7K | 227 | 113 |
| 112 | nuclear magnetic resonance spectroscopy | 56 | 1.6K | 47 | 49 |
| 112 | Medical innovations | 8 | 1.6K | 530 | 289 |
| 114 | Mass Spectrometry | 22 | 1.6K | 378 | 161 |
| 115 | Cell survival | 4 | 1.6K | 150 | 5 |
| 115 | molecular chaperones | 4 | 1.6K | 172 | 5 |
| 117 | Nanotechnology | 29 | 1.6K | 1833 | 1480 |
| 118 | Genetic Research | 20 | 1.6K | 7 | 4 |
| 119 | Polymers | 42 | 1.6K | 1454 | 1139 |
| 120 | Psychiatry | 13 | 1.5K | 2120 | 1159 |
| 121 | Analytical Biochemistry | 17 | 1.5K | 623 | 228 |
| 122 | Medical Microbiology | 17 | 1.5K | 957 | 682 |
| 123 | Biomedical Engineering | 33 | 1.5K | 1602 | 1269 |
| 124 | Allergy | 11 | 1.4K | 586 | 455 |
| 125 | Endocrinology | 30 | 1.4K | 967 | 961 |
| 126 | Semantics | 34 | 1.4K | 5 | 5 |
| 127 | Physical Chemistry | 18 | 1.3K | 935 | 602 |
| 128 | Biological Systems | 11 | 1.3K | 236 | 36 |
| 129 | Membranes | 36 | 1.3K | 419 | 510 |
| 130 | Biocompatible Materials | 14 | 1.2K | 1906 | 1407 |
| 131 | Plants | 11 | 1.2K | 1129 | 647 |
| 132 | Microorganisms | 12 | 1.2K | 419 | 289 |
| 133 | Drug design | 17 | 1.2K | 592 | 314 |
| 134 | soil microbiology | 9 | 1.1K | 809 | 520 |
| 135 | Chromosomes | 21 | 1.1K | 253 | 204 |
| 136 | plant molecular biology | 10 | 1.1K | 822 | 604 |
| 137 | polymerization | 28 | 1.1K | 1487 | 1143 |
| 138 | Mental Disorders | 6 | 1.1K | 2177 | 985 |
| 139 | infection | 16 | 1.1K | 628 | 439 |
| 140 | Infections | 15 | 1.1K | 413 | 332 |
| 141 | Biodiversity | 9 | 1.0K | 1295 | 638 |
| 142 | Oncogenes | 15 | 1.0K | 498 | 544 |
| 143 | Pathology | 17 | 990 | 1001 | 752 |
| 144 | Technology | 18 | 984 | 1776 | 1011 |
| 145 | Mental illness | 5 | 982 | 1551 | 730 |
| 146 | Bioenergetics | 21 | 946 | 209 | 207 |
| 147 | Cardiovascular system | 13 | 944 | 695 | 722 |
| 148 | Liver diseases | 6 | 916 | 1038 | 659 |
| 149 | Energy metabolism | 20 | 913 | 180 | 193 |
| 150 | Culture techniques | 37 | 899 | 19 | 31 |
| 151 | Toxicology | 14 | 834 | 2433 | 1747 |
| 152 | Nutrition | 6 | 810 | 3187 | 1555 |
| 153 | cell membrane | 13 | 807 | 242 | 194 |
| 154 | Psychophysiology | 6 | 805 | 1897 | 1092 |
| 155 | miniaturization | 12 | 791 | 933 | 787 |
| 156 | Computer-Aided Design | 13 | 772 | 478 | 230 |
| 157 | Industrial Microbiology | 19 | 764 | 625 | 704 |
| 158 | mammals | 19 | 748 | 299 | 199 |
| 159 | Leukemia | 18 | 737 | 410 | 501 |
| 160 | Biomolecules | 4 | 731 | 366 | 129 |
| 160 | Structure-activity relationship | 4 | 731 | 337 | 78 |
| 162 | Neurochemistry | 15 | 722 | 1082 | 929 |
| 163 | Metabolism | 14 | 712 | 1248 | 1225 |
| 164 | Neuropsychology | 6 | 653 | 1571 | 821 |
| 164 | Psychopharmacology | 6 | 653 | 1066 | 675 |
| 166 | Nervous system | 5 | 634 | 1910 | 1077 |
| 167 | Comparative Physiology | 4 | 632 | 661 | 241 |
| 168 | Crystallization | 34 | 629 | 39 | 73 |
| 169 | Vaccines | 13 | 624 | 870 | 653 |
| 170 | Combinatorial chemistry | 10 | 614 | 420 | 314 |
| 171 | Medical Laboratory Science | 18 | 601 | 841 | 1002 |
| 172 | Electrophoresis | 15 | 599 | 667 | 519 |
| 173 | Magnetic Resonance Spectroscopy | 10 | 586 | 660 | 346 |
| 174 | Pharmacy | 11 | 571 | 1079 | 746 |
| 175 | Physiology | 11 | 558 | 2345 | 1845 |
| 175 | Cytoskeleton | 6 | 558 | 156 | 59 |
| 177 | Hormones | 10 | 552 | 692 | 549 |
| 178 | Animal Behavior | 4 | 529 | 1558 | 897 |
| 179 | Cell death | 8 | 523 | 773 | 736 |
| 180 | natural products | 4 | 522 | 1645 | 528 |
| 181 | Medical Technology | 14 | 516 | 641 | 523 |
| 182 | Signal Transduction | 11 | 511 | 702 | 742 |
| 182 | cell movement | 4 | 511 | 180 | 67 |
| 184 | Solid State Physics | 6 | 481 | 2811 | 1671 |
| 185 | Colloids | 14 | 477 | 1869 | 1894 |
| 186 | Chemical Engineering | 6 | 465 | 3331 | 2392 |
| 187 | Yeast | 6 | 434 | 260 | 165 |
| 188 | Brain | 10 | 415 | 1461 | 1347 |
| 189 | Diagnostic Imaging | 14 | 378 | 883 | 901 |
| 190 | Neural circuitry | 3 | 376 | 1966 | 946 |
| 191 | peptides | 11 | 373 | 353 | 188 |
| 192 | nanoscience | 7 | 368 | 2044 | 1735 |
| 193 | Materials | 11 | 367 | 3508 | 3145 |
| 194 | chromatin | 8 | 364 | 30 | 59 |
| 195 | Plant physiology | 5 | 363 | 1622 | 1309 |
| 195 | glycoproteins | 6 | 363 | 286 | 223 |
| 195 | Glycoconjugates | 6 | 363 | 286 | 223 |
| 195 | glycolipids | 6 | 363 | 286 | 223 |
| 199 | Pharmacognosy | 1 | 362 | 2831 | 997 |
| 200 | Information Systems | 9 | 359 | 726 | 550 |
| 201 | Therapeutics | 3 | 355 | 1732 | 994 |
| 202 | Electron Microscopy | 14 | 353 | 108 | 87 |
| 203 | Oligosaccharide | 5 | 349 | 215 | 171 |
| 203 | Carbohydrates | 5 | 349 | 315 | 218 |
| 205 | Immunochemistry | 8 | 347 | 529 | 380 |
| 206 | cell interaction | 8 | 337 | 695 | 676 |
| 206 | Memory | 14 | 337 | 785 | 955 |
| 208 | Histochemistry | 10 | 336 | 546 | 434 |
| 209 | Cell communication | 6 | 334 | 540 | 413 |
| 210 | Mathematics | 9 | 333 | 3814 | 2316 |
| 211 | Environment | 6 | 332 | 3677 | 3798 |
| 212 | gene therapy | 6 | 328 | 788 | 713 |
| 212 | Protein folding | 5 | 328 | 52 | 33 |
| 214 | Microbial Biotechnology | 4 | 323 | 830 | 379 |
| 215 | visualization | 26 | 319 | 418 | 424 |
| 216 | Transplantation | 4 | 317 | 934 | 749 |
| 217 | Gerontology | 3 | 312 | 1971 | 811 |
| 218 | Insect biochemistry | 5 | 310 | 309 | 234 |
| 219 | Insects | 5 | 307 | 1194 | 620 |
| 220 | Surgery | 5 | 306 | 1443 | 1338 |
| 221 | Nanostructured Materials | 6 | 302 | 2313 | 1891 |
| 222 | Zoology | 9 | 301 | 1623 | 1136 |
| 223 | Reproduction | 4 | 299 | 2017 | 1208 |
| 224 | Endocrine glands | 2 | 297 | 301 | 227 |
| 225 | Aging | 8 | 294 | 1806 | 1478 |
| 226 | Materials Science | 9 | 268 | 2974 | 2796 |
| 227 | Oxidation-reduction | 7 | 264 | 485 | 724 |
| 228 | Environmental Health | 5 | 261 | 4211 | 3620 |
| 229 | Psychology | 6 | 260 | 3593 | 2639 |
| 230 | food technology | 4 | 258 | 2200 | 1600 |
| 231 | Medical Physics | 5 | 246 | 1361 | 1061 |
| 232 | Engineering | 5 | 244 | 3784 | 2265 |
| 233 | Public Health | 8 | 239 | 3710 | 3636 |
| 234 | Hypertension | 5 | 234 | 1234 | 1384 |
| 235 | drug therapy | 3 | 233 | 2262 | 1475 |
| 236 | DNA | 11 | 225 | 197 | 256 |
| 237 | Clinical Biochemistry | 4 | 219 | 1063 | 738 |
| 238 | Diagnostic microbiology | 4 | 218 | 1123 | 1242 |
| 239 | Nanochemistry | 3 | 213 | 1319 | 574 |
| 240 | Epidemiology | 3 | 208 | 3834 | 2471 |
| 240 | Genetic epidemiology | 3 | 208 | 269 | 169 |
| 240 | heredity | 3 | 208 | 675 | 352 |
| 243 | Parasitic Diseases | 6 | 207 | 1510 | 1406 |
| 244 | Population Genetics | 4 | 202 | 1057 | 978 |
| 245 | Molecular ecology | 6 | 197 | 757 | 1013 |
| 246 | Statistical physics | 9 | 191 | 2325 | 2182 |
| 247 | Diabetes mellitus | 6 | 190 | 1437 | 1746 |
| 247 | Diabetes | 6 | 190 | 1536 | 1812 |
| 249 | Mutagenesis | 1 | 187 | 935 | 194 |
| 249 | mutagens | 1 | 187 | 1336 | 748 |
| 251 | Nonlinear Dynamics | 7 | 185 | 1481 | 1329 |
| 252 | Microelectronics | 2 | 177 | 2113 | 1376 |
| 253 | Learning | 1 | 175 | 2045 | 877 |
| 253 | venom | 1 | 175 | 1313 | 467 |
| 253 | Toxins | 1 | 175 | 1459 | 529 |
| 256 | Surface Chemistry | 9 | 173 | 2360 | 2756 |
| 256 | Structural biology | 10 | 173 | 4 | 33 |
| 258 | Parasitology | 7 | 170 | 1672 | 1604 |
| 259 | Antioxidants | 3 | 167 | 780 | 814 |
| 260 | cloning | 4 | 166 | 577 | 744 |
| 261 | biological factors | 4 | 163 | 1780 | 1411 |
| 262 | Quantum Chemistry | 3 | 162 | 901 | 395 |
| 262 | Visual Perception | 13 | 162 | 725 | 1204 |
| 262 | Attention | 13 | 162 | 752 | 1253 |
| 262 | Perception | 13 | 162 | 844 | 1340 |
| 266 | Pediatrics | 2 | 159 | 2837 | 2000 |
| 266 | Adolescent Medicine | 2 | 159 | 709 | 695 |
| 268 | DNS | 8 | 158 | 221 | 347 |
| 268 | Trace elements | 1 | 158 | 566 | 234 |
| 270 | Lipid metabolism | 2 | 156 | 548 | 390 |
| 270 | Animal genetics | 2 | 156 | 731 | 414 |
| 270 | Lipid | 2 | 156 | 549 | 391 |
| 273 | Molecular recognition | 6 | 152 | 85 | 117 |
| 273 | Astrocytes | 2 | 152 | 555 | 538 |
| 275 | Neuropharmacology | 1 | 151 | 1027 | 446 |
| 276 | Health Policy | 3 | 150 | 2337 | 1659 |
| 277 | eugenics | 2 | 149 | 695 | 374 |
| 278 | mutation | 3 | 145 | 638 | 592 |
| 279 | Genetic therapy | 4 | 144 | 1042 | 1113 |
| 280 | Genetic Toxicology | 2 | 143 | 617 | 483 |
| 281 | Environmental Engineering | 2 | 142 | 4513 | 3247 |
| 281 | DNA methylation | 2 | 142 | 366 | 285 |
| 281 | Information Science | 4 | 142 | 2201 | 1949 |
| 284 | Structural dynamics | 4 | 138 | 911 | 925 |
| 285 | behavioral medicine | 1 | 137 | 2137 | 1242 |
| 285 | human behavior | 1 | 137 | 3637 | 2424 |
| 287 | Geriatrics | 2 | 134 | 3483 | 2163 |
| 287 | Flow cytometry | 7 | 134 | 201 | 350 |
| 289 | Psychoneuroimmunology | 2 | 133 | 749 | 715 |
| 289 | Neuroimmunology | 2 | 133 | 825 | 771 |
| 291 | Soft Condensed Matter | 5 | 127 | 855 | 904 |
| 291 | Mycology | 2 | 127 | 1926 | 1379 |
| 291 | nucleotides | 12 | 127 | 116 | 124 |
| 294 | Nephrology | 2 | 126 | 674 | 618 |
| 294 | Spectrum analysis | 7 | 126 | 2946 | 3211 |
| 294 | Kidney diseases | 2 | 126 | 1151 | 811 |
| 297 | Environmental Policy | 1 | 123 | 4842 | 3253 |
| 297 | Environmental Law | 1 | 123 | 1807 | 1386 |
| 297 | environmental protection | 1 | 123 | 5107 | 3200 |
| 297 | Environmental monitoring | 1 | 123 | 5240 | 3653 |
| 301 | Electronics | 4 | 122 | 3274 | 2664 |
| 301 | Protozoa | 3 | 122 | 427 | 382 |
| 303 | Quality Control | 2 | 120 | 2327 | 1511 |
| 303 | food handling | 2 | 120 | 1097 | 912 |
| 303 | musculoskeletal system | 2 | 120 | 179 | 123 |
| 306 | Steroids | 2 | 118 | 1193 | 867 |
| 307 | Mobile genetic elements | 3 | 115 | 79 | 81 |
| 307 | Biogeochemistry | 1 | 115 | 1680 | 1200 |
| 307 | Fungi | 1 | 115 | 1585 | 1039 |
| 310 | Peptide | 5 | 114 | 146 | 137 |
| 311 | Hemodynamics | 1 | 113 | 923 | 754 |
| 312 | Breeding | 1 | 111 | 1852 | 1093 |
| 313 | Social Psychology | 1 | 109 | 3103 | 1813 |
| 313 | Cognitive neuroscience | 1 | 109 | 1426 | 965 |
| 315 | Ecological Genetics | 1 | 108 | 1157 | 430 |
| 315 | Conservation Biology | 1 | 108 | 1833 | 1167 |
| 315 | Condensed Matter | 4 | 108 | 2915 | 2491 |
| 318 | free radicals | 6 | 103 | 973 | 1638 |
| 319 | Information Theory | 2 | 102 | 1675 | 1188 |
| 319 | Chemical analysis | 6 | 102 | 835 | 1090 |
| 321 | Developmental Neurobiology | 2 | 101 | 695 | 436 |
| 322 | Functional Genomics | 2 | 100 | 348 | 378 |
| 322 | embryonic development | 1 | 100 | 736 | 413 |
| 322 | Biometrics | 2 | 100 | 1243 | 891 |
| 325 | Obesity | 1 | 97 | 3026 | 2151 |
| 326 | Freeze-Drying | 1 | 96 | 727 | 315 |
| 326 | Hypothermia | 1 | 96 | 727 | 315 |
| 326 | Freeze Drying | 1 | 96 | 727 | 315 |
| 329 | biopolymers | 4 | 95 | 1064 | 1144 |
| 330 | Telecommunication | 1 | 94 | 3893 | 2234 |
| 331 | Pharmaceutical Technology | 3 | 93 | 1600 | 1574 |
| 331 | Pharmacokinetics | 3 | 93 | 1006 | 962 |
| 331 | drugs | 3 | 93 | 2294 | 2132 |
| 334 | Biogeochemical cycles | 1 | 92 | 682 | 664 |
| 335 | Environmental Toxicology | 2 | 90 | 2885 | 2782 |
| 335 | pain | 4 | 90 | 1159 | 1420 |
| 335 | Muscles | 3 | 90 | 855 | 999 |
| 338 | Computer Graphics | 11 | 89 | 888 | 1518 |
| 339 | Molecules | 3 | 88 | 1453 | 1139 |
| 340 | Artificial Intelligence | 5 | 87 | 3057 | 3323 |
| 340 | toxicity testing | 1 | 87 | 1359 | 774 |
| 342 | Photonics | 6 | 84 | 1434 | 1945 |
| 342 | Nanoparticles | 2 | 84 | 2167 | 1919 |
| 344 | Neurogenetics | 3 | 83 | 276 | 325 |
| 344 | Image Processing | 6 | 83 | 1636 | 2210 |
| 344 | computer networks | 3 | 83 | 2589 | 2314 |
| 347 | Catalysis | 7 | 82 | 2418 | 3319 |
| 347 | Malaria | 3 | 82 | 754 | 801 |
| 349 | Statistics | 3 | 81 | 2574 | 1993 |
| 350 | cytokines | 2 | 78 | 1731 | 1679 |
| 351 | Green Chemistry | 3 | 77 | 1711 | 2111 |
| 351 | Crystal growth | 3 | 77 | 1094 | 1091 |
| 353 | Europe | 2 | 76 | 3880 | 2759 |
| 354 | Coral reef biology | 1 | 75 | 508 | 409 |
| 354 | Interferons | 1 | 75 | 559 | 321 |
| 354 | Cytokine | 1 | 75 | 752 | 639 |
| 357 | Hydrology | 1 | 74 | 3693 | 2446 |
| 357 | Water | 1 | 74 | 3583 | 3062 |
| 359 | Cybernetics | 3 | 72 | 1613 | 1709 |
| 360 | Nutrigenomics | 2 | 71 | 127 | 162 |
| 361 | Plant Genetics | 1 | 69 | 1099 | 966 |
| 361 | Plant genetic engineering | 1 | 69 | 1498 | 1212 |
| 361 | Hippocampus | 1 | 69 | 501 | 455 |
| 364 | Critical Care | 2 | 66 | 1851 | 2140 |
| 364 | Critical Care Medicine | 2 | 66 | 1660 | 2046 |
| 364 | Bacteria | 2 | 66 | 458 | 627 |
| 367 | Electrical Engineering | 1 | 65 | 5141 | 2727 |
| 367 | research and development | 1 | 65 | 710 | 497 |
| 367 | Parasites | 3 | 65 | 1627 | 1702 |
| 370 | Biopharmaceutics | 2 | 62 | 1510 | 1494 |
| 370 | Chemotherapy | 2 | 62 | 1664 | 1709 |
| 370 | Signal Processing | 5 | 62 | 2049 | 2711 |
| 370 | United States | 1 | 62 | 8349 | 5199 |
| 374 | Nuclear Engineering | 12 | 61 | 858 | 1403 |
| 374 | Raman spectroscopy | 1 | 61 | 1363 | 919 |
| 374 | Synthetic biology | 6 | 61 | 215 | 449 |
| 374 | Infrared spectroscopy | 1 | 61 | 680 | 397 |
| 374 | biomedicine | 2 | 61 | 1244 | 1153 |
| 379 | Organometallic chemistry | 4 | 60 | 1726 | 1822 |
| 380 | Nuclear Medicine | 1 | 58 | 1556 | 1130 |
| 380 | Molecular Imaging | 1 | 58 | 1051 | 913 |
| 382 | carcinogens | 3 | 57 | 1020 | 1414 |
| 383 | arthritis | 2 | 54 | 1381 | 1756 |
| 384 | Marine Ecology | 2 | 53 | 910 | 882 |
| 385 | Archaea | 2 | 52 | 39 | 92 |
| 386 | Plant Ecology | 1 | 51 | 2506 | 2350 |
| 387 | Electrochemistry | 3 | 50 | 3450 | 3612 |
| 387 | prions | 1 | 50 | 168 | 123 |
| 389 | Sarcopenia | 1 | 48 | 730 | 784 |
| 390 | monoclonal antibodies | 1 | 47 | 648 | 429 |
| 390 | Optical materials | 4 | 47 | 2248 | 3056 |
| 392 | Sustainable Engineering | 2 | 46 | 1966 | 2225 |
| 392 | Medical Oncology | 4 | 46 | 1507 | 2522 |
| 392 | Neurotoxicology | 1 | 46 | 1016 | 963 |
| 392 | Apoptosis | 1 | 46 | 541 | 496 |
| 392 | neurotoxins | 1 | 46 | 541 | 496 |
| 392 | Neurotoxic agents | 1 | 46 | 541 | 496 |
| 392 | Nerve regeneration | 1 | 46 | 541 | 496 |
| 399 | Serology | 5 | 45 | 353 | 745 |
| 399 | Physical organic chemistry | 2 | 45 | 1672 | 1660 |
| 401 | Photochemistry | 4 | 44 | 1569 | 2287 |
| 401 | management | 1 | 44 | 4827 | 3773 |
| 401 | Antibodies | 2 | 44 | 818 | 950 |
| 401 | Antigens | 2 | 44 | 1080 | 1226 |
| 405 | Rheumatology | 1 | 42 | 1784 | 1571 |
| 405 | Marine Biology | 5 | 42 | 2011 | 3133 |
| 405 | Neuromuscular diseases | 2 | 42 | 756 | 925 |
| 405 | disease vectors | 2 | 42 | 1233 | 1467 |
| 409 | Global Health | 2 | 41 | 1406 | 1391 |
| 409 | Pathogens | 2 | 41 | 139 | 208 |
| 411 | Aquaculture | 1 | 40 | 2055 | 1758 |
| 412 | Solid State Chemistry | 2 | 39 | 2657 | 2699 |
| 412 | Soviet Union | 4 | 39 | 598 | 543 |
| 414 | Enzyme | 1 | 38 | 880 | 964 |
| 415 | Horticulture | 1 | 37 | 1366 | 1031 |
| 415 | Agricultural Chemistry | 2 | 37 | 2792 | 3154 |
| 415 | Light | 4 | 37 | 806 | 1520 |
| 418 | Origin of life | 1 | 36 | 282 | 247 |
| 418 | Liquid Crystals | 2 | 36 | 1131 | 830 |
| 418 | Organelle biogenesis | 1 | 36 | 410 | 368 |
| 421 | Disease | 1 | 35 | 635 | 899 |
| 422 | Nuclear Physics | 2 | 34 | 4070 | 3891 |
| 422 | lasers | 2 | 34 | 2494 | 2492 |
| 424 | histological techniques | 2 | 33 | 828 | 1266 |
| 424 | Algae | 2 | 33 | 886 | 1064 |
| 424 | Diet | 2 | 33 | 2510 | 3579 |
| 424 | Seaweed | 2 | 33 | 661 | 926 |
| 428 | Sustainable Development | 1 | 32 | 3421 | 3180 |
| 428 | Fluid Mechanics | 1 | 32 | 2515 | 2099 |
| 428 | occupational health and safety | 1 | 32 | 392 | 286 |
| 428 | industrial hygiene | 1 | 32 | 2025 | 1299 |
| 428 | sustainability | 1 | 32 | 1572 | 1613 |
| 428 | global environmental change | 1 | 32 | 1382 | 1615 |
| 428 | biocatalysis | 1 | 32 | 339 | 560 |
| 428 | Homogeneous catalysis | 1 | 32 | 339 | 560 |
| 428 | Heterogeneous catalysis | 1 | 32 | 339 | 560 |
| 437 | Quantum electronics | 1 | 31 | 2472 | 2052 |
| 437 | Environmental Management | 1 | 31 | 4220 | 4496 |
| 439 | Audiology | 1 | 30 | 1140 | 1040 |
| 439 | mathematical concepts | 2 | 30 | 535 | 535 |
| 441 | symbiosis | 2 | 29 | 171 | 295 |
| 441 | Reproductive health | 1 | 29 | 1421 | 1390 |
| 441 | ecosystem | 1 | 29 | 2014 | 2297 |
| 441 | Microbiota | 1 | 29 | 166 | 146 |
| 445 | Biomass Energy | 1 | 27 | 3516 | 3703 |
| 445 | Sleep Disorders | 1 | 27 | 2432 | 2279 |
| 445 | biofuels | 1 | 27 | 544 | 875 |
| 445 | Sleep | 1 | 27 | 2455 | 2297 |
| 449 | Immunopathology | 1 | 26 | 1953 | 2178 |
| 449 | Semantic web | 2 | 26 | 216 | 310 |
| 451 | Molecular Pharmacology | 1 | 25 | 1286 | 1572 |
| 451 | biobanks | 1 | 25 | 317 | 270 |
| 451 | Developmental Immunology | 1 | 25 | 1380 | 1497 |
| 451 | animals | 1 | 25 | 2099 | 1784 |
| 451 | Growth factors | 1 | 25 | 558 | 805 |
| 451 | pigments | 1 | 25 | 1328 | 1429 |
| 457 | Child | 1 | 24 | 3690 | 3440 |
| 457 | Food additives | 2 | 24 | 1466 | 2146 |
| 457 | Organ transplantation | 1 | 24 | 591 | 519 |
| 457 | hydrocolloids | 2 | 24 | 732 | 1338 |
| 461 | Animal Biotechnology | 1 | 23 | 354 | 370 |
| 461 | Surface-Active Agents | 1 | 23 | 1792 | 2179 |
| 461 | Ornithology | 4 | 23 | 878 | 1285 |
| 461 | Surface properties | 1 | 23 | 1867 | 2264 |
| 465 | Oceanography | 3 | 22 | 1750 | 2570 |
| 465 | Astronomy | 2 | 22 | 2813 | 3427 |
| 465 | Photography | 10 | 22 | 1458 | 1565 |
| 465 | Computer Vision | 1 | 22 | 1792 | 1959 |
| 465 | Immunogenetics | 1 | 22 | 1158 | 1255 |
| 470 | Radiobiology | 2 | 21 | 1682 | 2289 |
| 470 | herbicides | 1 | 21 | 490 | 538 |
| 470 | Digestive system diseases | 1 | 21 | 1493 | 1660 |
| 473 | Antiviral agents | 1 | 20 | 570 | 698 |
| 473 | Peroxisomes | 1 | 20 | 207 | 310 |
| 475 | Radiography | 1 | 19 | 1341 | 1630 |
| 475 | sanitation | 1 | 19 | 2329 | 3001 |
| 475 | Extracellular matrix | 1 | 19 | 425 | 668 |
| 475 | Pollution | 1 | 19 | 6908 | 7780 |
| 475 | collagen | 1 | 19 | 443 | 686 |
| 480 | Political Science | 1 | 18 | 2669 | 1965 |
| 480 | Parkinson's disease | 1 | 18 | 433 | 612 |
| 480 | Atomic spectroscopy | 1 | 18 | 1743 | 1760 |
| 483 | Internet of Things | 1 | 17 | 1647 | 1813 |
| 483 | Autoantibodies | 1 | 17 | 944 | 1273 |
| 483 | Autoimmunity | 1 | 17 | 1154 | 1579 |
| 483 | Liposomes | 1 | 17 | 924 | 1049 |
| 483 | internet | 1 | 17 | 2415 | 2478 |
| 483 | Autoimmune diseases | 1 | 17 | 1066 | 1424 |
| 489 | Evolutionary Genetics | 2 | 16 | 907 | 1638 |
| 489 | Molecular Epidemiology | 2 | 16 | 907 | 1638 |
| 489 | DNA repair | 2 | 16 | 376 | 712 |
| 492 | Genetic translocation | 1 | 15 | 369 | 505 |
| 492 | Photobiology | 1 | 15 | 2290 | 2675 |
| 492 | Organometallic compounds | 1 | 15 | 1814 | 2004 |
| 492 | plasmids | 1 | 15 | 369 | 505 |
| 496 | Oligosaccharides | 1 | 14 | 494 | 701 |
| 496 | Scandinavia | 2 | 14 | 891 | 1433 |
| 496 | Decision making | 2 | 14 | 1884 | 2831 |
| 499 | Morphogenesis | 1 | 13 | 154 | 305 |
| 499 | Organogenesis | 1 | 13 | 94 | 223 |
| 499 | Cerebral cortex | 1 | 13 | 1305 | 1705 |
| 502 | cilia | 2 | 11 | 26 | 105 |
| 503 | Technological Innovations | 2 | 10 | 1347 | 2243 |
| 503 | China | 1 | 10 | 4386 | 5128 |
| 503 | rare diseases | 1 | 10 | 1137 | 1573 |
| 503 | Fisheries | 1 | 10 | 2478 | 2865 |
| 507 | Electrochemical Analysis | 1 | 9 | 2221 | 2740 |
| 507 | biological invasions | 1 | 9 | 1033 | 1457 |
| 507 | Entomology | 1 | 9 | 3322 | 3635 |
| 510 | Metallurgy | 1 | 8 | 3464 | 3810 |
| 510 | Thrombosis | 1 | 8 | 1559 | 2178 |
| 510 | Synaptic Transmission | 1 | 8 | 821 | 1217 |
| 510 | Drosophila | 1 | 8 | 133 | 235 |
| 510 | Invertebrates | 1 | 8 | 1045 | 1450 |
| 510 | vascular diseases | 1 | 8 | 1084 | 1579 |
| 516 | epilepsy | 1 | 7 | 1499 | 2143 |
| 516 | Water pollution | 1 | 7 | 3836 | 4976 |
| 516 | Marine Pollution | 1 | 7 | 1869 | 2657 |
| 516 | Cell surface receptors | 1 | 7 | 293 | 514 |
| 516 | NMR | 1 | 7 | 898 | 1145 |
| 516 | magnetic resonance | 1 | 7 | 927 | 1175 |
| 522 | Computer Science | 1 | 6 | 3507 | 4059 |
| 522 | Mathematical Physics | 1 | 6 | 3802 | 3980 |
| 522 | Animal ecology | 1 | 6 | 1787 | 2356 |
| 522 | Ethology | 1 | 6 | 2091 | 2989 |
| 522 | Biofilms | 1 | 6 | 302 | 670 |
| 522 | Social behavior | 1 | 6 | 1844 | 2497 |
| 522 | Birds | 1 | 6 | 1752 | 1988 |
| 529 | Neuropsychiatry | 1 | 5 | 1372 | 1994 |
| 529 | Chromatography | 1 | 5 | 2595 | 3492 |
| 529 | Food | 1 | 5 | 4528 | 6064 |
| 529 | calcification | 1 | 5 | 872 | 1387 |
| 529 | Chromatographic analysis | 1 | 5 | 2947 | 3829 |
| 529 | Phylogeny | 1 | 5 | 1409 | 2114 |
| 535 | Veterinary Immunology | 1 | 4 | 625 | 1046 |
| 535 | Schizophrenia | 1 | 4 | 1503 | 2078 |
| 535 | Simulation | 1 | 4 | 460 | 769 |
| 535 | Intellectual Property | 1 | 4 | 402 | 505 |
| 535 | patents | 1 | 4 | 359 | 695 |
| 535 | theoretical models | 1 | 4 | 460 | 769 |
| 535 | Eigenvalues | 1 | 4 | 424 | 342 |
| 535 | Aquatic ecology | 1 | 4 | 1545 | 2144 |
| 543 | Biosensors | 1 | 3 | 1990 | 2984 |
| 543 | Religion and Science | 1 | 3 | 242 | 305 |
| 543 | Information Retrieval | 2 | 3 | 655 | 1386 |
| 543 | Religion | 1 | 3 | 1550 | 1481 |
| 543 | Immunopharmacology | 1 | 3 | 1777 | 2741 |
| 543 | Open source software | 3 | 3 | 62 | 193 |
| 543 | Popular Literature | 1 | 3 | 235 | 301 |
| 543 | Cardiovascular diseases | 1 | 3 | 2540 | 3543 |
| 551 | Social Sciences | 1 | 2 | 5621 | 6875 |
| 551 | Humanities | 1 | 2 | 3256 | 4023 |
| 551 | Chemical Ecology | 1 | 2 | 861 | 1384 |
| 551 | Andrology | 1 | 2 | 1112 | 1750 |
| 551 | Environmental Chemistry | 1 | 2 | 3371 | 4751 |
| 551 | Bipolar Disorder | 1 | 2 | 567 | 948 |
| 551 | pheromones | 1 | 2 | 801 | 1310 |
| 558 | Optoelectronics | 1 | 1 | 1040 | 1553 |
| 558 | Melanoma | 1 | 1 | 415 | 771 |
| 558 | Electrons | 1 | 1 | 199 | 379 |
| 558 | Combinatorial analysis | 1 | 1 | 1537 | 1898 |
| 558 | Cellulose | 1 | 1 | 1096 | 1850 |
| 558 | software | 1 | 1 | 1763 | 2879 |
| 564 | Human-Computer Interaction | 1 | 0 | 2592 | 4086 |
| 564 | Bioethics | 1 | 0 | 1509 | 2483 |
| 564 | Genetic disorders | 1 | 0 | 783 | 1318 |
| 564 | Marine invertebrates | 1 | 0 | 472 | 823 |
| 564 | Chromosome abnormalities | 1 | 0 | 56 | 104 |
| 564 | Randomized Controlled Trials | 1 | 0 | 1987 | 3339 |
| 564 | big data | 1 | 0 | 1172 | 2133 |
| 564 | Dementia | 1 | 0 | 2232 | 2764 |
| 564 | Alzheimer's disease | 1 | 0 | 2308 | 2892 |
| 564 | Neutrons | 1 | 0 | 114 | 227 |
| 564 | Endocrine system | 1 | 0 | 1245 | 1415 |
| 564 | gastrointestinal tract | 1 | 0 | 645 | 1220 |
| 564 | Pancreatic diseases | 1 | 0 | 614 | 1004 |
