| 1 | Biotechnology | 171 | 10.9K | 20 | 18 |
| 2 | Molecular Biology | 88 | 4.5K | 149 | 216 |
| 3 | Pollution | 97 | 4.4K | 30 | 76 |
| 4 | Biochemistry | 106 | 4.2K | 123 | 158 |
| 5 | Technology | 51 | 4.0K | 50 | 31 |
| 6 | Microbiology | 80 | 3.5K | 70 | 101 |
| 7 | Biomedical Engineering | 39 | 3.3K | 40 | 20 |
| 8 | Bioengineering | 75 | 3.1K | 20 | 49 |
| 9 | Botany | 46 | 2.9K | 232 | 190 |
| 10 | Science | 47 | 2.8K | 292 | 522 |
| 11 | Environmental Health | 39 | 2.8K | 81 | 59 |
| 12 | Biology | 44 | 2.8K | 595 | 607 |
| 13 | Toxicology | 65 | 2.6K | 49 | 41 |
| 14 | Chemistry | 51 | 2.2K | 937 | 907 |
| 15 | environmental pollution | 72 | 2.1K | 25 | 43 |
| 16 | Medicine | 51 | 2.1K | 302 | 381 |
| 17 | Biochemical Engineering | 21 | 1.8K | 52 | 68 |
| 18 | Environmental Engineering | 19 | 1.8K | 68 | 42 |
| 19 | Industrial Microbiology | 17 | 1.7K | 28 | 12 |
| 20 | Plant genetic engineering | 28 | 1.6K | 20 | 35 |
| 21 | environmental protection | 18 | 1.6K | 52 | 32 |
| 22 | Plant Biotechnology | 23 | 1.5K | 29 | 38 |
| 23 | Environmental pollutants | 37 | 1.5K | 24 | 23 |
| 24 | pollutants | 35 | 1.5K | 18 | 21 |
| 25 | Plants | 16 | 1.4K | 168 | 106 |
| 26 | Pharmacology | 34 | 1.3K | 213 | 242 |
| 27 | Ecology | 35 | 1.2K | 506 | 784 |
| 28 | Biophysics | 18 | 1.2K | 380 | 168 |
| 29 | Genetic engineering | 11 | 1.1K | 55 | 32 |
| 30 | sanitation | 13 | 1.0K | 41 | 48 |
| 31 | Research | 45 | 1.0K | 236 | 417 |
| 32 | Environmental Toxicology | 22 | 994 | 44 | 49 |
| 33 | Oxidation-reduction | 5 | 944 | 21 | 10 |
| 34 | free radicals | 3 | 941 | 108 | 23 |
| 35 | Environmental monitoring | 26 | 913 | 56 | 71 |
| 36 | Oxidative stress | 2 | 897 | 89 | 9 |
| 37 | Pharmaceutical Chemistry | 34 | 889 | 72 | 102 |
| 38 | Genetics | 3 | 883 | 1045 | 266 |
| 39 | plant molecular biology | 17 | 858 | 100 | 171 |
| 40 | Cytology | 14 | 837 | 461 | 831 |
| 41 | Environmental Chemistry | 27 | 833 | 27 | 68 |
| 42 | environmental exposure | 12 | 822 | 58 | 32 |
| 43 | Cell Biology | 17 | 776 | 513 | 1041 |
| 44 | Medical Laboratory Science | 11 | 728 | 33 | 28 |
| 45 | Environment | 15 | 636 | 413 | 950 |
| 46 | pain | 17 | 618 | 38 | 49 |
| 47 | Immunology | 11 | 587 | 455 | 574 |
| 48 | Physics | 11 | 580 | 791 | 1302 |
| 49 | Cancer | 12 | 543 | 440 | 587 |
| 50 | Clinical Chemistry | 18 | 522 | 38 | 70 |
| 51 | Insects | 11 | 503 | 63 | 37 |
| 52 | Nanotechnology | 10 | 497 | 1077 | 1123 |
| 53 | Biomass Energy | 8 | 476 | 69 | 60 |
| 54 | Genomics | 13 | 471 | 114 | 144 |
| 55 | Insect biochemistry | 10 | 470 | 10 | 8 |
| 56 | Molecular Microbiology | 9 | 469 | 75 | 77 |
| 57 | Chemical Engineering | 22 | 462 | 227 | 475 |
| 58 | Plant physiology | 6 | 443 | 296 | 208 |
| 59 | Developmental Immunology | 6 | 440 | 20 | 13 |
| 60 | biofuels | 6 | 433 | 9 | 9 |
| 61 | Histology | 6 | 431 | 154 | 115 |
| 62 | Environmental Management | 11 | 409 | 72 | 93 |
| 62 | Virulence | 9 | 409 | 44 | 91 |
| 64 | soil conservation | 12 | 403 | 19 | 24 |
| 64 | soil pollution | 12 | 403 | 4 | 4 |
| 66 | Environmental Policy | 4 | 363 | 209 | 163 |
| 67 | Bacterial diseases | 8 | 345 | 4 | 4 |
| 68 | Agricultural Chemistry | 27 | 342 | 36 | 71 |
| 69 | Lipids | 6 | 330 | 61 | 50 |
| 70 | Biopharmaceutics | 4 | 329 | 46 | 22 |
| 71 | Zoology | 4 | 320 | 679 | 249 |
| 72 | Plant cells | 8 | 309 | 316 | 565 |
| 73 | Microbial Ecology | 8 | 285 | 220 | 406 |
| 74 | gene therapy | 4 | 284 | 54 | 62 |
| 75 | drug therapy | 6 | 282 | 612 | 659 |
| 76 | Pharmacognosy | 7 | 272 | 59 | 64 |
| 77 | Therapeutics | 5 | 271 | 465 | 581 |
| 78 | biological evolution | 4 | 257 | 367 | 324 |
| 79 | Microbial Biotechnology | 4 | 256 | 43 | 29 |
| 80 | Neurology | 10 | 247 | 864 | 2029 |
| 81 | Environmental Law | 2 | 238 | 158 | 84 |
| 82 | Chemotherapy | 1 | 236 | 446 | 91 |
| 83 | Meteorology | 1 | 230 | 707 | 232 |
| 84 | cell interaction | 2 | 227 | 131 | 38 |
| 85 | Developmental Biology | 4 | 223 | 673 | 743 |
| 86 | Pharmacy | 11 | 216 | 131 | 164 |
| 87 | Nutrition | 4 | 198 | 1089 | 867 |
| 88 | Entomology | 7 | 196 | 265 | 205 |
| 89 | Neurophysiology | 5 | 192 | 278 | 497 |
| 89 | Virology | 8 | 192 | 364 | 1522 |
| 91 | Immunochemistry | 3 | 190 | 46 | 25 |
| 92 | proteins | 8 | 189 | 223 | 345 |
| 93 | Physiology | 2 | 188 | 3436 | 1470 |
| 93 | Anatomy | 2 | 188 | 1574 | 812 |
| 93 | Ecophysiology | 2 | 188 | 38 | 3 |
| 96 | Inflammation | 2 | 187 | 130 | 69 |
| 97 | cell adhesion molecules | 1 | 186 | 150 | 18 |
| 97 | cytokines | 1 | 186 | 263 | 45 |
| 97 | Cell communication | 1 | 186 | 218 | 37 |
| 100 | biological monitoring | 4 | 183 | 20 | 16 |
| 100 | Immunity | 3 | 183 | 515 | 568 |
| 102 | Medicinal plants | 1 | 180 | 169 | 63 |
| 103 | miniaturization | 3 | 178 | 157 | 199 |
| 104 | Lipid metabolism | 4 | 175 | 10 | 15 |
| 104 | Lipid | 4 | 175 | 10 | 15 |
| 106 | protein | 7 | 171 | 155 | 241 |
| 107 | Chromosome mapping | 6 | 170 | 91 | 197 |
| 107 | gene mapping | 6 | 170 | 117 | 275 |
| 109 | Environmental risk assessment | 8 | 158 | 5 | 27 |
| 109 | environmental control | 8 | 158 | 3 | 26 |
| 111 | Host-parasite interactions | 2 | 154 | 144 | 200 |
| 111 | drugs | 7 | 154 | 298 | 450 |
| 113 | Signal Transduction | 6 | 149 | 63 | 138 |
| 114 | Transgenic plants | 7 | 148 | 16 | 34 |
| 115 | pain management | 4 | 146 | 158 | 203 |
| 116 | Evolution | 2 | 137 | 1095 | 917 |
| 117 | natural products | 7 | 131 | 57 | 75 |
| 118 | Green Chemistry | 1 | 126 | 1614 | 917 |
| 119 | Gene expression regulation | 4 | 122 | 88 | 146 |
| 119 | Genetic regulation | 4 | 122 | 127 | 384 |
| 121 | Analytical Chemistry | 4 | 120 | 565 | 587 |
| 122 | Microorganisms | 6 | 118 | 64 | 133 |
| 123 | Microelectronics | 2 | 109 | 305 | 244 |
| 124 | Informatics | 2 | 107 | 66 | 58 |
| 125 | Drug discovery | 6 | 104 | 8 | 16 |
| 126 | Plant Ecology | 1 | 100 | 1313 | 883 |
| 126 | Molecular Genetics | 2 | 100 | 1230 | 1314 |
| 126 | Molecular evolution | 2 | 100 | 249 | 275 |
| 126 | mycoses | 3 | 100 | 52 | 117 |
| 126 | Phylogeny | 2 | 100 | 94 | 87 |
| 131 | Invertebrates | 4 | 98 | 49 | 54 |
| 132 | Bacterial infections | 1 | 90 | 298 | 164 |
| 133 | Serology | 3 | 89 | 31 | 34 |
| 133 | Bacteriology | 3 | 89 | 508 | 1016 |
| 133 | ecosystem | 4 | 89 | 300 | 902 |
| 136 | Vaccines | 2 | 88 | 228 | 191 |
| 137 | Mycology | 5 | 82 | 108 | 153 |
| 137 | Fungi | 5 | 82 | 40 | 85 |
| 139 | Biofilms | 1 | 80 | 16 | 14 |
| 140 | Pharmaceutical Technology | 4 | 78 | 399 | 541 |
| 141 | Catalysis | 7 | 75 | 716 | 1548 |
| 141 | Plant breeding | 3 | 75 | 121 | 125 |
| 143 | transgenic organisms | 4 | 73 | 9 | 31 |
| 143 | transgenic animals | 4 | 73 | 9 | 31 |
| 143 | Bioinformatics | 5 | 73 | 179 | 530 |
| 146 | Computational Biology | 5 | 72 | 344 | 1195 |
| 146 | Malaria | 5 | 72 | 41 | 86 |
| 148 | Parasitology | 6 | 71 | 93 | 253 |
| 149 | Chemical Ecology | 1 | 70 | 53 | 51 |
| 149 | pheromones | 1 | 70 | 52 | 51 |
| 151 | Microfluidics | 1 | 67 | 196 | 160 |
| 152 | Water pollution | 2 | 66 | 329 | 366 |
| 153 | drug development | 1 | 63 | 361 | 357 |
| 153 | Structure-activity relationship | 3 | 63 | 19 | 35 |
| 153 | enzymes | 6 | 63 | 52 | 196 |
| 153 | drug evaluation | 1 | 63 | 527 | 238 |
| 157 | Reproductive toxicology | 1 | 62 | 92 | 58 |
| 158 | Drug design | 2 | 61 | 451 | 515 |
| 159 | Plant Genetics | 2 | 59 | 57 | 105 |
| 159 | Animal husbandry | 1 | 59 | 28 | 18 |
| 159 | Biocompatible Materials | 3 | 59 | 938 | 1808 |
| 159 | livestock | 1 | 59 | 41 | 21 |
| 163 | Medical genetics | 2 | 58 | 3197 | 5216 |
| 163 | Analytical Biochemistry | 3 | 58 | 97 | 205 |
| 165 | Psychoneuroimmunology | 1 | 57 | 118 | 130 |
| 165 | Neuroimmunology | 1 | 57 | 126 | 144 |
| 167 | Pathology | 1 | 56 | 2331 | 2147 |
| 167 | Electrophoresis | 4 | 56 | 588 | 1062 |
| 167 | Chromatography | 4 | 56 | 364 | 619 |
| 167 | Brain | 2 | 56 | 449 | 758 |
| 167 | Nervous system | 1 | 56 | 1345 | 1876 |
| 167 | Chromatographic analysis | 4 | 56 | 521 | 761 |
| 173 | Immunotherapy | 2 | 52 | 191 | 431 |
| 173 | Japan | 3 | 52 | 279 | 324 |
| 175 | Pharmacogenetics | 3 | 50 | 72 | 299 |
| 176 | Nuclear Medicine | 1 | 49 | 117 | 131 |
| 176 | Diagnostic Imaging | 1 | 49 | 608 | 563 |
| 176 | Molecular Imaging | 1 | 49 | 67 | 95 |
| 176 | Europe | 1 | 49 | 1165 | 653 |
| 180 | Parasites | 5 | 48 | 72 | 246 |
| 181 | Antioxidants | 3 | 47 | 33 | 168 |
| 181 | Nanoparticles | 1 | 47 | 4500 | 4812 |
| 181 | Food | 4 | 47 | 762 | 2482 |
| 181 | nanoscience | 1 | 47 | 598 | 743 |
| 185 | Medical Microbiology | 1 | 46 | 393 | 509 |
| 185 | biological factors | 2 | 46 | 792 | 1246 |
| 187 | Rheumatology | 3 | 44 | 461 | 852 |
| 187 | Neurochemistry | 4 | 44 | 474 | 2220 |
| 187 | Obesity | 1 | 44 | 3424 | 3452 |
| 190 | Public Health | 2 | 43 | 2243 | 3503 |
| 190 | Clinical Pharmacology | 4 | 43 | 598 | 1853 |
| 190 | Colloids | 2 | 43 | 534 | 849 |
| 190 | Industry | 2 | 43 | 13 | 42 |
| 190 | Spectrum analysis | 3 | 43 | 600 | 1068 |
| 195 | Bioorganic chemistry | 5 | 42 | 178 | 565 |
| 195 | arthritis | 3 | 42 | 223 | 621 |
| 195 | biopolymers | 2 | 42 | 421 | 769 |
| 198 | catalytic activity | 1 | 41 | 861 | 713 |
| 198 | Natural history | 3 | 41 | 581 | 2022 |
| 198 | genome | 2 | 41 | 281 | 608 |
| 201 | Neuropsychology | 1 | 40 | 664 | 740 |
| 202 | soil microbiology | 1 | 39 | 207 | 299 |
| 202 | Soil biology | 1 | 39 | 98 | 153 |
| 202 | food contamination | 2 | 39 | 177 | 227 |
| 202 | Molecular structure | 2 | 39 | 1002 | 1071 |
| 202 | Biodiversity | 2 | 39 | 1249 | 1563 |
| 207 | Proteomics | 4 | 37 | 73 | 323 |
| 207 | Pharmacokinetics | 3 | 37 | 44 | 148 |
| 209 | Marine Biology | 1 | 36 | 377 | 391 |
| 209 | Marine Pollution | 1 | 36 | 110 | 129 |
| 209 | Parasitic Diseases | 3 | 36 | 106 | 307 |
| 209 | disease vectors | 3 | 36 | 50 | 129 |
| 213 | Food Microbiology | 2 | 35 | 721 | 1872 |
| 213 | food technology | 2 | 35 | 1760 | 3254 |
| 213 | cell physiology | 1 | 35 | 1675 | 2387 |
| 216 | Surface Chemistry | 1 | 34 | 1177 | 1017 |
| 217 | Biomolecules | 1 | 33 | 689 | 848 |
| 218 | Water | 1 | 30 | 1759 | 2528 |
| 218 | Enzyme | 1 | 30 | 50 | 75 |
| 220 | Nanomedicine | 1 | 29 | 139 | 410 |
| 220 | Immune system | 1 | 29 | 566 | 891 |
| 222 | Embryology | 1 | 28 | 1656 | 2035 |
| 222 | Geophysics | 1 | 28 | 4653 | 5740 |
| 222 | Growth | 1 | 28 | 1246 | 1641 |
| 222 | Genes | 1 | 28 | 356 | 460 |
| 226 | Pharmacogenomics | 1 | 27 | 45 | 77 |
| 227 | Cardiovascular system | 1 | 26 | 464 | 807 |
| 227 | particles | 1 | 26 | 491 | 644 |
| 229 | Data Mining | 1 | 25 | 285 | 488 |
| 229 | big data | 1 | 25 | 35 | 45 |
| 229 | data collection | 1 | 25 | 175 | 253 |
| 232 | Organic Chemistry | 3 | 24 | 410 | 984 |
| 232 | Polymers | 2 | 24 | 3694 | 5192 |
| 232 | Combinatorial chemistry | 1 | 24 | 126 | 235 |
| 232 | China | 1 | 24 | 1011 | 1025 |
| 236 | Plant tissue culture | 1 | 23 | 78 | 107 |
| 236 | Genetic therapy | 2 | 23 | 161 | 695 |
| 236 | Plant cell culture | 1 | 23 | 72 | 106 |
| 239 | infection | 1 | 22 | 226 | 401 |
| 240 | toxicity testing | 1 | 21 | 504 | 709 |
| 241 | Environmental Microbiology | 1 | 20 | 1096 | 2135 |
| 241 | Systems Biology | 3 | 20 | 182 | 688 |
| 241 | Pesticide residues | 1 | 20 | 9 | 26 |
| 241 | Food additives | 1 | 20 | 153 | 229 |
| 245 | Fluid Mechanics | 1 | 19 | 409 | 496 |
| 245 | Food Preservation | 1 | 19 | 837 | 929 |
| 245 | supercritical fluids | 1 | 19 | 27 | 55 |
| 245 | Aquaculture | 2 | 19 | 389 | 857 |
| 249 | Proteome | 1 | 18 | 221 | 525 |
| 250 | patents | 1 | 17 | 10 | 15 |
| 251 | Fishery management | 1 | 16 | 729 | 1029 |
| 252 | Synthetic biology | 1 | 15 | 59 | 112 |
| 252 | visualization | 6 | 15 | 159 | 952 |
| 254 | Chemical industry | 3 | 14 | 326 | 1390 |
| 254 | Psychophysiology | 1 | 14 | 1666 | 2638 |
| 256 | brain mapping | 1 | 13 | 1525 | 2743 |
| 257 | Agricultural Biotechnology | 2 | 12 | 12 | 27 |
| 257 | Autoantibodies | 1 | 12 | 50 | 156 |
| 257 | Autoimmunity | 1 | 12 | 85 | 237 |
| 257 | animals | 2 | 12 | 209 | 697 |
| 257 | Autoimmune diseases | 1 | 12 | 58 | 181 |
| 257 | Forest genetics | 2 | 12 | 23 | 53 |
| 257 | wildlife diseases | 2 | 12 | 12 | 28 |
| 264 | Molecular cloning | 1 | 11 | 197 | 479 |
| 264 | Genetic recombination | 1 | 11 | 194 | 467 |
| 264 | Recombinant DNA | 1 | 11 | 214 | 517 |
| 264 | venom | 8 | 11 | 15 | 171 |
| 264 | Toxins | 8 | 11 | 18 | 182 |
| 269 | Immunopathology | 1 | 10 | 483 | 1618 |
| 269 | Crystallography | 2 | 10 | 104 | 205 |
| 269 | X-ray crystallography | 2 | 10 | 56 | 131 |
| 272 | Soft Condensed Matter | 1 | 9 | 124 | 279 |
| 272 | Molecular ecology | 1 | 9 | 1965 | 4177 |
| 274 | actuators | 2 | 8 | 177 | 585 |
| 274 | transducers | 2 | 8 | 177 | 585 |
| 276 | Biosecurity | 1 | 7 | 1 | 3 |
| 276 | Cyberterrorism | 1 | 7 | 2 | 13 |
| 278 | isomerism | 1 | 6 | 265 | 540 |
| 278 | immunoassay | 1 | 6 | 30 | 57 |
| 278 | Chirality | 1 | 6 | 265 | 540 |
| 281 | Physical organic chemistry | 1 | 5 | 435 | 849 |
| 281 | Risk assessment | 1 | 5 | 65 | 156 |
| 281 | ecological risk assessment | 1 | 5 | 27 | 66 |
| 281 | Taste | 1 | 5 | 208 | 615 |
| 281 | flavor | 1 | 5 | 89 | 350 |
| 281 | smell | 1 | 5 | 208 | 615 |
| 281 | Health Risk Assessment | 1 | 5 | 57 | 122 |
| 288 | Human genetics | 1 | 4 | 757 | 1693 |
| 288 | Forest Ecology | 1 | 4 | 89 | 210 |
| 288 | Biotransformation | 1 | 4 | 10 | 34 |
| 288 | drug toxicity | 1 | 4 | 52 | 150 |
| 292 | Crystallization | 1 | 3 | 47 | 110 |
| 292 | Biomarkers | 1 | 3 | 44 | 144 |
| 292 | peptides | 1 | 3 | 924 | 2597 |
| 292 | biochemical markers | 1 | 3 | 241 | 1023 |
| 292 | Aging | 1 | 3 | 1137 | 2495 |
| 297 | Materials | 1 | 2 | 7264 | 13957 |
| 297 | Optical materials | 1 | 2 | 5645 | 11387 |
| 297 | antibiotics | 1 | 2 | 77 | 207 |
| 300 | Hematology | 1 | 1 | 3277 | 6508 |
| 300 | Optics | 1 | 1 | 1549 | 2719 |
| 300 | Photography | 1 | 1 | 299 | 418 |
| 300 | Emerging infectious diseases | 1 | 1 | 31 | 126 |
| 304 | Materials Science | 1 | 0 | 3447 | 7763 |
| 304 | Electrical Engineering | 1 | 0 | 1214 | 2772 |
| 304 | Food Science | 1 | 0 | 136 | 529 |
| 304 | Freeze-Drying | 1 | 0 | 43 | 119 |
| 304 | Hypothermia | 1 | 0 | 43 | 119 |
| 304 | Freeze Drying | 1 | 0 | 43 | 119 |
| 304 | plasma spraying | 1 | 0 | 13 | 35 |
| 304 | Stem cells | 1 | 0 | 726 | 2408 |
