| 1 | Science | 655 | 70.5K | 29 | 24 |
| 2 | Hematology | 1,213 | 66.8K | 8 | 6 |
| 3 | Biology | 638 | 59.4K | 21 | 30 |
| 4 | Molecular Biology | 665 | 46.8K | 18 | 21 |
| 5 | Cancer | 631 | 45.6K | 6 | 6 |
| 6 | Physics | 270 | 44.7K | 29 | 29 |
| 7 | Biochemistry | 899 | 41.5K | 18 | 18 |
| 8 | Medicine | 519 | 34.9K | 82 | 69 |
| 9 | Natural history | 94 | 31.7K | 33 | 31 |
| 10 | Cytology | 264 | 27.6K | 23 | 22 |
| 11 | Oncology | 390 | 26.9K | 5 | 5 |
| 12 | Cell Biology | 209 | 26.6K | 26 | 22 |
| 13 | Neurology | 315 | 23.2K | 76 | 59 |
| 14 | Human genetics | 116 | 20.5K | 50 | 58 |
| 15 | Chemistry | 285 | 17.8K | 22 | 25 |
| 16 | Research | 375 | 15.8K | 61 | 50 |
| 17 | Genetics | 232 | 15.6K | 14 | 29 |
| 18 | Virology | 125 | 14.8K | 28 | 30 |
| 19 | transport vesicles | 6 | 14.6K | 24 | 10 |
| 20 | Pharmacology | 143 | 11.7K | 105 | 25 |
| 21 | nucleic acids | 155 | 11.7K | 2 | 4 |
| 22 | Immunology | 201 | 11.6K | 35 | 36 |
| 23 | Medical genetics | 149 | 10.6K | 77 | 76 |
| 24 | Biophysics | 326 | 10.3K | 23 | 24 |
| 25 | Medical Oncology | 283 | 10.1K | 8 | 14 |
| 26 | Brain | 99 | 8.8K | 23 | 14 |
| 27 | Biotechnology | 67 | 8.8K | 40 | 10 |
| 28 | Biochemical Engineering | 32 | 7.5K | 24 | 9 |
| 29 | Leukemia | 185 | 7.5K | 5 | 23 |
| 30 | Bioengineering | 42 | 7.4K | 34 | 11 |
| 31 | Pathology | 133 | 7.1K | 43 | 40 |
| 32 | Oncogenes | 77 | 6.6K | 9 | 10 |
| 33 | Microbiology | 120 | 6.6K | 95 | 97 |
| 34 | Pharmaceutical Chemistry | 40 | 6.1K | 62 | 20 |
| 35 | Radiobiology | 156 | 5.9K | 17 | 29 |
| 36 | Endocrinology | 170 | 5.6K | 38 | 105 |
| 37 | Diabetes mellitus | 90 | 5.3K | 48 | 60 |
| 37 | Diabetes | 90 | 5.3K | 63 | 66 |
| 39 | Chromosomes | 81 | 5.0K | 1 | 2 |
| 40 | Genetic therapy | 113 | 4.8K | 5 | 8 |
| 41 | Immunity | 43 | 4.5K | 63 | 52 |
| 42 | Therapeutics | 76 | 4.2K | 24 | 25 |
| 43 | Genetic engineering | 62 | 4.0K | 11 | 10 |
| 44 | Neurochemistry | 109 | 4.0K | 16 | 24 |
| 45 | Cell differentiation | 83 | 3.9K | 19 | 32 |
| 46 | Metabolic diseases | 55 | 3.8K | 137 | 137 |
| 47 | Signal Transduction | 23 | 3.7K | 49 | 14 |
| 48 | Surgery | 44 | 3.7K | 233 | 195 |
| 49 | Stem cells | 73 | 3.6K | 22 | 17 |
| 50 | Immune system | 20 | 3.4K | 42 | 37 |
| 51 | Medical innovations | 26 | 3.3K | 18 | 22 |
| 52 | Immunotherapy | 60 | 3.2K | 38 | 40 |
| 53 | Psychology | 89 | 3.1K | 27 | 45 |
| 54 | Bacteriology | 35 | 3.0K | 14 | 14 |
| 55 | gene therapy | 62 | 3.0K | 13 | 17 |
| 56 | Geriatric Oncology | 121 | 2.9K | 2 | 4 |
| 57 | drug development | 21 | 2.9K | 25 | 25 |
| 58 | viruses | 44 | 2.9K | 30 | 34 |
| 59 | Cell metabolism | 8 | 2.8K | 41 | 20 |
| 60 | Psychiatry | 35 | 2.6K | 324 | 219 |
| 61 | Toxicology | 49 | 2.6K | 76 | 38 |
| 62 | Neurons | 17 | 2.6K | 27 | 37 |
| 63 | Neurobiology | 36 | 2.5K | 47 | 42 |
| 64 | gene mapping | 49 | 2.5K | 18 | 21 |
| 65 | Recombinant DNA | 45 | 2.4K | 4 | 4 |
| 66 | Genetic regulation | 38 | 2.4K | 16 | 23 |
| 67 | Urology | 81 | 2.4K | 82 | 92 |
| 68 | Analytical Biochemistry | 63 | 2.4K | 3 | 8 |
| 69 | Liver diseases | 20 | 2.4K | 196 | 135 |
| 70 | Hormones | 58 | 2.4K | 7 | 14 |
| 71 | Physiology | 60 | 2.4K | 120 | 116 |
| 72 | Environment | 19 | 2.3K | 77 | 45 |
| 73 | Chromosome mapping | 43 | 2.3K | 16 | 16 |
| 74 | Developmental Biology | 36 | 2.3K | 36 | 46 |
| 75 | Transplantation | 42 | 2.3K | 84 | 76 |
| 76 | Geriatrics | 50 | 2.2K | 109 | 84 |
| 77 | Carcinogenesis | 53 | 2.2K | 6 | 10 |
| 78 | Public Health | 55 | 2.2K | 158 | 148 |
| 79 | Genomics | 40 | 2.2K | 77 | 55 |
| 80 | Cytogenetics | 40 | 2.1K | 34 | 49 |
| 81 | Molecular cloning | 38 | 2.1K | 4 | 4 |
| 81 | Genetic recombination | 38 | 2.1K | 4 | 4 |
| 83 | mutation | 41 | 2.1K | 2 | 1 |
| 84 | carcinogens | 45 | 2.0K | 10 | 11 |
| 85 | Pharmacogenetics | 52 | 2.0K | 7 | 11 |
| 86 | Homeostasis | 7 | 2.0K | 37 | 42 |
| 87 | Medical Laboratory Science | 43 | 2.0K | 13 | 15 |
| 88 | Environmental Health | 29 | 1.9K | 73 | 46 |
| 89 | Steroids | 46 | 1.9K | 7 | 8 |
| 90 | Mental Disorders | 29 | 1.9K | 226 | 173 |
| 91 | Biomedical Engineering | 25 | 1.9K | 208 | 68 |
| 92 | Visual Perception | 58 | 1.9K | 27 | 25 |
| 92 | Memory | 58 | 1.9K | 27 | 27 |
| 92 | Attention | 58 | 1.9K | 29 | 27 |
| 92 | Perception | 58 | 1.9K | 27 | 26 |
| 96 | Mental illness | 23 | 1.8K | 137 | 107 |
| 97 | rehabilitation | 28 | 1.8K | 121 | 78 |
| 98 | mutagens | 36 | 1.7K | 9 | 14 |
| 99 | Metabolism | 53 | 1.7K | 189 | 309 |
| 100 | Quality of life | 28 | 1.7K | 30 | 25 |
| 101 | Epidemiology | 61 | 1.6K | 87 | 142 |
| 102 | Neurophysiology | 42 | 1.6K | 77 | 118 |
| 103 | Molecular structure | 14 | 1.5K | 20 | 21 |
| 104 | Cardiovascular system | 23 | 1.5K | 193 | 224 |
| 105 | Gene expression regulation | 23 | 1.5K | 16 | 25 |
| 106 | Developmental Genetics | 15 | 1.5K | 19 | 23 |
| 107 | Mass Spectrometry | 22 | 1.5K | 2 | 3 |
| 108 | free radicals | 25 | 1.4K | 34 | 47 |
| 109 | Drug delivery systems | 13 | 1.4K | 27 | 16 |
| 110 | Nutrition | 53 | 1.3K | 158 | 259 |
| 111 | Antigens | 25 | 1.3K | 34 | 23 |
| 112 | Medical Technology | 30 | 1.3K | 32 | 19 |
| 113 | Clinical Chemistry | 31 | 1.3K | 153 | 122 |
| 114 | Lymphoma | 77 | 1.2K | 4 | 4 |
| 115 | Infertility | 5 | 1.2K | 277 | 78 |
| 115 | fertility | 5 | 1.2K | 281 | 80 |
| 117 | Environmental Toxicology | 7 | 1.2K | 137 | 35 |
| 118 | Pediatrics | 21 | 1.2K | 389 | 325 |
| 119 | Nanotechnology | 21 | 1.2K | 131 | 117 |
| 120 | Multiple Myeloma | 74 | 1.2K | 4 | 3 |
| 121 | Diagnostic Imaging | 29 | 1.2K | 114 | 105 |
| 122 | blood transfusion | 45 | 1.1K | 21 | 22 |
| 123 | Allergy | 16 | 1.1K | 164 | 141 |
| 124 | vascular diseases | 17 | 1.1K | 37 | 44 |
| 125 | cloning | 21 | 1.1K | 12 | 31 |
| 126 | Industrial Microbiology | 10 | 1.1K | 7 | 10 |
| 127 | Thrombosis | 18 | 1.1K | 104 | 67 |
| 128 | Histology | 24 | 1.1K | 47 | 47 |
| 129 | Medical Physics | 63 | 1.1K | 56 | 89 |
| 130 | Analytical Chemistry | 19 | 1.0K | 96 | 55 |
| 131 | viral genetics | 9 | 1.0K | 16 | 25 |
| 132 | Computational Biology | 22 | 971 | 29 | 35 |
| 133 | Evolution | 22 | 959 | 2 | 5 |
| 134 | Systems Biology | 21 | 942 | 30 | 16 |
| 135 | drug abuse | 2 | 938 | 138 | 6 |
| 136 | proteins | 45 | 937 | 13 | 31 |
| 137 | Antibodies | 14 | 936 | 38 | 24 |
| 138 | drug therapy | 31 | 922 | 182 | 192 |
| 139 | Embryology | 20 | 907 | 51 | 81 |
| 140 | Hallucinogens | 1 | 897 | 45 | 1 |
| 141 | Respiration | 10 | 864 | 224 | 91 |
| 142 | RNA | 19 | 862 | 5 | 9 |
| 143 | United Kingdom | 17 | 851 | 49 | 51 |
| 144 | cell physiology | 25 | 846 | 38 | 75 |
| 145 | Proteomics | 9 | 833 | 45 | 29 |
| 146 | Cell death | 19 | 819 | 107 | 140 |
| 147 | Clinical Biochemistry | 14 | 814 | 127 | 85 |
| 148 | Immunochemistry | 15 | 811 | 33 | 22 |
| 149 | Biochemical Genetics | 20 | 800 | 1 | 2 |
| 150 | Psychophysiology | 11 | 785 | 195 | 192 |
| 151 | Growth | 12 | 778 | 35 | 48 |
| 152 | Bioinformatics | 15 | 771 | 40 | 35 |
| 153 | enzymes | 29 | 758 | 12 | 23 |
| 154 | Photochemistry | 8 | 754 | 28 | 11 |
| 155 | Diagnostic microbiology | 12 | 727 | 183 | 206 |
| 156 | General Surgery | 11 | 710 | 168 | 43 |
| 157 | Obstetrics | 20 | 705 | 418 | 344 |
| 157 | protein | 23 | 705 | 6 | 14 |
| 159 | Anatomy | 17 | 702 | 46 | 68 |
| 160 | genome | 19 | 696 | 26 | 59 |
| 161 | Organic Chemistry | 26 | 695 | 17 | 18 |
| 162 | Psychopharmacology | 6 | 694 | 269 | 157 |
| 163 | Metastasis | 2 | 690 | 45 | 11 |
| 164 | DNA repair | 17 | 680 | 5 | 5 |
| 165 | Vaccines | 21 | 642 | 92 | 108 |
| 166 | Molecular evolution | 16 | 634 | 5 | 7 |
| 167 | Nuclear Medicine | 15 | 622 | 131 | 119 |
| 168 | Histocompatibility Testing | 15 | 607 | 24 | 19 |
| 169 | Hypertension | 15 | 606 | 282 | 409 |
| 170 | Electrophysiology | 10 | 592 | 214 | 87 |
| 171 | Genetic Counseling | 14 | 576 | 19 | 9 |
| 171 | pain | 11 | 576 | 209 | 183 |
| 173 | histological techniques | 11 | 564 | 44 | 49 |
| 174 | Medical Microbiology | 11 | 559 | 357 | 338 |
| 175 | Bioorganic chemistry | 23 | 555 | 21 | 26 |
| 176 | Hematopoietic stem cell transplantation | 13 | 543 | 10 | 17 |
| 177 | Clinical Pharmacology | 9 | 541 | 241 | 121 |
| 178 | Virulence | 11 | 529 | 50 | 80 |
| 179 | Proteome | 8 | 528 | 61 | 50 |
| 180 | Nervous system | 12 | 527 | 315 | 352 |
| 181 | Culture techniques | 8 | 523 | 11 | 4 |
| 182 | Synapses | 3 | 520 | 27 | 10 |
| 183 | Host-parasite interactions | 10 | 515 | 55 | 112 |
| 184 | Aging | 30 | 509 | 147 | 274 |
| 185 | eugenics | 12 | 504 | 12 | 14 |
| 186 | Flow cytometry | 3 | 502 | 74 | 18 |
| 187 | Social support | 12 | 501 | 4 | 2 |
| 187 | Social environment | 12 | 501 | 4 | 2 |
| 189 | Molecular Imaging | 12 | 495 | 108 | 114 |
| 190 | Immunopathology | 13 | 487 | 187 | 167 |
| 191 | Palliative Care | 27 | 479 | 24 | 55 |
| 192 | Environmental Engineering | 9 | 471 | 47 | 58 |
| 193 | Diet | 17 | 459 | 139 | 222 |
| 194 | Critical Care | 9 | 455 | 476 | 582 |
| 194 | Critical Care Medicine | 9 | 455 | 473 | 586 |
| 196 | Oxidative stress | 9 | 453 | 48 | 75 |
| 197 | Photobiology | 3 | 447 | 15 | 4 |
| 198 | Ecology | 10 | 444 | 92 | 117 |
| 198 | Immunopharmacology | 6 | 444 | 212 | 66 |
| 200 | Immunogenetics | 14 | 441 | 55 | 61 |
| 200 | nanoscience | 5 | 441 | 153 | 132 |
| 202 | Dermatology | 23 | 435 | 221 | 299 |
| 203 | North America | 7 | 430 | 102 | 42 |
| 204 | United States | 18 | 428 | 141 | 194 |
| 205 | Environmental monitoring | 12 | 426 | 67 | 96 |
| 206 | cytokines | 4 | 421 | 300 | 95 |
| 207 | Antioxidants | 6 | 409 | 58 | 61 |
| 208 | Cellular senescence | 6 | 380 | 14 | 23 |
| 209 | Nursing | 12 | 375 | 123 | 75 |
| 210 | Europe | 7 | 363 | 363 | 227 |
| 211 | Astrocytes | 3 | 349 | 57 | 43 |
| 212 | Parenteral nutrition | 15 | 348 | 135 | 254 |
| 213 | Pediatric Neurology | 7 | 346 | 263 | 362 |
| 214 | Child | 16 | 344 | 327 | 307 |
| 214 | Hemophilia | 9 | 344 | 101 | 80 |
| 216 | Clinical Immunology | 12 | 343 | 184 | 216 |
| 216 | Lipids | 6 | 343 | 175 | 126 |
| 218 | Immunohistochemistry | 6 | 342 | 26 | 10 |
| 219 | Physical Chemistry | 12 | 337 | 7 | 11 |
| 220 | Oxidation-reduction | 7 | 333 | 76 | 132 |
| 221 | Genetic Toxicology | 7 | 331 | 4 | 9 |
| 222 | Food | 5 | 316 | 184 | 85 |
| 222 | Membranes | 14 | 316 | 30 | 58 |
| 224 | Health Policy | 12 | 315 | 170 | 222 |
| 225 | Chronic diseases | 17 | 311 | 40 | 135 |
| 225 | Genes | 9 | 311 | 31 | 16 |
| 227 | Light | 5 | 307 | 32 | 27 |
| 228 | alcoholism | 5 | 305 | 224 | 145 |
| 229 | Microscopy | 3 | 300 | 74 | 28 |
| 230 | DNS | 7 | 298 | 20 | 8 |
| 230 | DNA | 7 | 298 | 21 | 10 |
| 232 | Health Education | 11 | 297 | 104 | 119 |
| 232 | Drug design | 20 | 297 | 20 | 65 |
| 234 | Menopause | 7 | 293 | 19 | 16 |
| 235 | chromatin | 5 | 287 | 4 | 4 |
| 236 | Molecular Genetics | 12 | 283 | 21 | 35 |
| 237 | Health | 10 | 278 | 304 | 337 |
| 238 | Chemotherapy | 15 | 277 | 181 | 274 |
| 239 | Otolaryngology | 3 | 275 | 238 | 103 |
| 240 | biological evolution | 5 | 274 | 29 | 24 |
| 241 | ethanol | 4 | 264 | 59 | 24 |
| 242 | Biopharmaceutics | 9 | 263 | 24 | 60 |
| 243 | Pollution | 6 | 261 | 143 | 110 |
| 244 | Reproduction | 5 | 260 | 501 | 386 |
| 245 | Obesity | 5 | 259 | 470 | 407 |
| 246 | Environmental Policy | 5 | 257 | 75 | 93 |
| 246 | Environmental Law | 5 | 257 | 69 | 85 |
| 246 | environmental protection | 5 | 257 | 148 | 115 |
| 249 | Molecular Pharmacology | 7 | 255 | 33 | 41 |
| 250 | cell interaction | 9 | 250 | 100 | 136 |
| 251 | biochemical markers | 9 | 241 | 54 | 44 |
| 252 | Child Development | 3 | 238 | 513 | 285 |
| 253 | hospice care | 14 | 232 | 24 | 38 |
| 254 | Developmental Immunology | 7 | 227 | 13 | 30 |
| 255 | behavioral medicine | 9 | 225 | 75 | 127 |
| 256 | natural products | 5 | 223 | 43 | 17 |
| 257 | Melanoma | 3 | 221 | 40 | 23 |
| 257 | Cell communication | 5 | 221 | 71 | 70 |
| 259 | Biosensors | 2 | 214 | 162 | 89 |
| 259 | Child psychology | 2 | 214 | 295 | 181 |
| 261 | Radioisotopes | 6 | 213 | 80 | 54 |
| 262 | Biomarkers | 8 | 206 | 34 | 39 |
| 263 | Familial diseases | 14 | 203 | 21 | 36 |
| 264 | Neuropsychiatry | 3 | 202 | 236 | 149 |
| 265 | counseling | 4 | 201 | 171 | 126 |
| 266 | Animal genetics | 6 | 200 | 2 | 2 |
| 267 | Neuropsychology | 9 | 199 | 232 | 318 |
| 268 | Patient education | 3 | 186 | 162 | 116 |
| 268 | Research Design | 19 | 186 | 35 | 123 |
| 268 | visualization | 21 | 186 | 34 | 34 |
| 271 | Pharmacognosy | 6 | 183 | 109 | 122 |
| 272 | Biocompatible Materials | 9 | 180 | 322 | 506 |
| 273 | Mycology | 6 | 179 | 74 | 73 |
| 274 | Informatics | 7 | 178 | 5 | 10 |
| 275 | Engineering | 8 | 177 | 114 | 180 |
| 276 | Pediatric Hematology | 6 | 176 | 100 | 43 |
| 277 | Clinical Trials | 17 | 175 | 21 | 75 |
| 277 | DNA methylation | 6 | 175 | 17 | 47 |
| 279 | Ophthalmology | 9 | 174 | 372 | 487 |
| 280 | Hospitals | 2 | 173 | 168 | 31 |
| 281 | Protein engineering | 5 | 172 | 3 | 4 |
| 281 | molecular design | 5 | 172 | 4 | 5 |
| 281 | Plant cells | 1 | 172 | 17 | 16 |
| 284 | DNA polymerases | 5 | 170 | 29 | 97 |
| 285 | Inflammation | 3 | 168 | 289 | 273 |
| 286 | Library Science | 3 | 167 | 20 | 4 |
| 287 | preventive medicine | 6 | 166 | 163 | 198 |
| 288 | Primary health care | 7 | 162 | 262 | 264 |
| 289 | Fisheries | 1 | 161 | 7 | 3 |
| 290 | cell proliferation | 9 | 159 | 28 | 63 |
| 291 | Kidney diseases | 3 | 157 | 496 | 368 |
| 292 | Health promotion | 11 | 156 | 47 | 117 |
| 293 | Dentistry | 4 | 154 | 120 | 58 |
| 294 | Nephrology | 2 | 153 | 305 | 263 |
| 294 | peptides | 8 | 153 | 7 | 12 |
| 296 | Neuroimmunology | 6 | 152 | 66 | 170 |
| 296 | Bioelectronics | 1 | 152 | 203 | 106 |
| 298 | Electrophoresis | 5 | 151 | 104 | 108 |
| 298 | Colloids | 6 | 151 | 99 | 120 |
| 300 | Pediatric Nursing | 7 | 149 | 57 | 58 |
| 300 | Women's health | 6 | 149 | 156 | 183 |
| 300 | vitamin C | 2 | 149 | 55 | 48 |
| 300 | vitamin E | 2 | 149 | 55 | 48 |
| 304 | Animal Physiology | 1 | 147 | 3 | 1 |
| 304 | Natural selection | 1 | 147 | 3 | 1 |
| 304 | animals | 1 | 147 | 74 | 15 |
| 304 | genetic selection | 1 | 147 | 3 | 1 |
| 308 | Social work | 7 | 145 | 63 | 54 |
| 309 | Surface Chemistry | 5 | 144 | 111 | 112 |
| 309 | Pharmacogenomics | 2 | 144 | 91 | 52 |
| 309 | sanitation | 3 | 144 | 25 | 36 |
| 312 | Alzheimer's disease | 15 | 142 | 157 | 291 |
| 313 | Origin of life | 2 | 141 | 3 | 3 |
| 313 | Organelle biogenesis | 2 | 141 | 3 | 3 |
| 315 | actuators | 2 | 140 | 115 | 53 |
| 315 | heredity | 8 | 140 | 15 | 35 |
| 315 | transducers | 2 | 140 | 115 | 53 |
| 318 | Functional Genomics | 5 | 139 | 18 | 42 |
| 319 | Data Mining | 2 | 137 | 104 | 81 |
| 319 | pain management | 3 | 137 | 202 | 147 |
| 319 | data collection | 2 | 137 | 82 | 73 |
| 322 | Materials | 5 | 134 | 243 | 294 |
| 323 | Physical Therapy | 3 | 133 | 420 | 391 |
| 324 | older people | 18 | 132 | 47 | 154 |
| 325 | Nitric oxide | 2 | 131 | 27 | 15 |
| 326 | Soviet Union | 4 | 127 | 6 | 3 |
| 327 | mammals | 4 | 126 | 40 | 38 |
| 328 | Pharmacy | 8 | 122 | 102 | 196 |
| 329 | mycoses | 3 | 120 | 126 | 206 |
| 330 | Electronics | 3 | 119 | 157 | 160 |
| 330 | Gene expression | 5 | 119 | 11 | 13 |
| 330 | Genetic testing | 5 | 119 | 38 | 17 |
| 333 | Computer Graphics | 4 | 118 | 18 | 23 |
| 333 | Animal Behavior | 6 | 118 | 68 | 220 |
| 335 | Materials Science | 4 | 117 | 187 | 226 |
| 335 | Alternative Medicine | 6 | 117 | 136 | 207 |
| 335 | complementary therapies | 6 | 117 | 147 | 219 |
| 335 | Cell cycle | 6 | 117 | 38 | 77 |
| 335 | Muscles | 4 | 117 | 256 | 321 |
| 335 | vitamins | 3 | 117 | 9 | 15 |
| 341 | occupational diseases | 3 | 116 | 130 | 136 |
| 342 | drugs | 6 | 115 | 375 | 476 |
| 343 | Nanostructured Materials | 3 | 114 | 132 | 138 |
| 343 | Sarcopenia | 3 | 114 | 98 | 140 |
| 343 | Communication in medicine | 4 | 114 | 19 | 20 |
| 343 | Communication | 4 | 114 | 38 | 44 |
| 347 | Genetic epidemiology | 5 | 113 | 24 | 44 |
| 348 | Health Services Research | 2 | 110 | 567 | 350 |
| 348 | Molecular Microbiology | 2 | 110 | 103 | 115 |
| 350 | biological factors | 1 | 106 | 370 | 176 |
| 350 | Behavior | 6 | 106 | 353 | 610 |
| 352 | biomedicine | 5 | 105 | 42 | 92 |
| 353 | Environmental pollutants | 4 | 104 | 167 | 164 |
| 353 | Dementia | 14 | 104 | 145 | 265 |
| 353 | Microwaves | 4 | 104 | 7 | 6 |
| 356 | Psychosomatic Medicine | 3 | 103 | 278 | 311 |
| 356 | Hemodynamics | 2 | 103 | 259 | 279 |
| 356 | Radiation | 2 | 103 | 286 | 123 |
| 359 | Chronobiology | 5 | 102 | 20 | 52 |
| 359 | Circadian rhythms | 5 | 102 | 19 | 52 |
| 359 | biological clocks | 5 | 102 | 20 | 52 |
| 359 | circadian rhythm | 5 | 102 | 20 | 52 |
| 359 | biological rhythms | 5 | 102 | 20 | 52 |
| 359 | drug evaluation | 2 | 102 | 430 | 233 |
| 365 | Cardiovascular diseases | 5 | 100 | 684 | 731 |
| 366 | nucleotides | 5 | 99 | 13 | 6 |
| 367 | Statistics | 12 | 98 | 32 | 109 |
| 367 | health behavior | 6 | 98 | 69 | 139 |
| 367 | miniaturization | 4 | 98 | 71 | 137 |
| 370 | Anthropology | 3 | 96 | 29 | 29 |
| 371 | Radiology | 14 | 94 | 205 | 403 |
| 371 | Histochemistry | 8 | 94 | 72 | 197 |
| 371 | Autoantibodies | 5 | 94 | 120 | 257 |
| 371 | Autoimmunity | 5 | 94 | 179 | 387 |
| 371 | Autoimmune diseases | 5 | 94 | 124 | 271 |
| 376 | Nanoparticles | 2 | 93 | 128 | 135 |
| 377 | Clinical Psychology | 4 | 92 | 208 | 279 |
| 377 | Microbial Ecology | 3 | 92 | 134 | 228 |
| 379 | Medical Anthropology | 5 | 91 | 87 | 218 |
| 380 | Sexual health | 8 | 89 | 96 | 207 |
| 380 | Biometrics | 8 | 89 | 44 | 104 |
| 382 | Substance Abuse | 2 | 87 | 325 | 247 |
| 382 | Brachytherapy | 11 | 87 | 27 | 54 |
| 382 | medical education | 2 | 87 | 754 | 455 |
| 385 | Mathematics | 9 | 86 | 22 | 66 |
| 385 | Geriatric Nursing | 5 | 86 | 28 | 28 |
| 385 | Neurogenetics | 2 | 86 | 85 | 78 |
| 388 | Neuropharmacology | 1 | 84 | 287 | 144 |
| 388 | Fluorescence spectroscopy | 6 | 84 | 34 | 58 |
| 388 | Molecular Spectroscopy | 6 | 84 | 45 | 79 |
| 388 | disease outbreaks | 2 | 84 | 143 | 155 |
| 388 | Epidemics | 2 | 84 | 132 | 154 |
| 388 | amino acids | 3 | 84 | 38 | 57 |
| 394 | Diagnosis | 5 | 82 | 73 | 86 |
| 394 | Bones | 2 | 82 | 308 | 340 |
| 396 | healthcare disparities | 4 | 81 | 36 | 63 |
| 396 | Elderly | 15 | 81 | 40 | 155 |
| 398 | Population Genetics | 2 | 80 | 10 | 23 |
| 398 | Molecular ecology | 2 | 80 | 7 | 24 |
| 398 | Insects | 2 | 80 | 9 | 9 |
| 398 | Insect biochemistry | 2 | 80 | 3 | 5 |
| 402 | Sexuality | 1 | 78 | 47 | 20 |
| 402 | homosexuality | 1 | 78 | 55 | 32 |
| 402 | Drug discovery | 1 | 78 | 52 | 29 |
| 405 | China | 6 | 77 | 183 | 220 |
| 406 | nuclear magnetic resonance | 12 | 75 | 37 | 132 |
| 407 | Radiation Oncology | 8 | 74 | 62 | 190 |
| 408 | Sociology | 3 | 73 | 177 | 280 |
| 408 | Microelectronics | 2 | 73 | 59 | 105 |
| 408 | Technology | 4 | 73 | 64 | 135 |
| 411 | Chemical Engineering | 1 | 72 | 294 | 169 |
| 411 | Comparative Physiology | 4 | 72 | 11 | 24 |
| 411 | cell adhesion molecules | 1 | 72 | 82 | 86 |
| 414 | Information Systems | 3 | 70 | 105 | 94 |
| 415 | Social Sciences | 2 | 69 | 121 | 115 |
| 415 | ethnicity | 2 | 69 | 20 | 24 |
| 415 | Drug targeting | 1 | 69 | 116 | 80 |
| 415 | health and race | 2 | 69 | 16 | 22 |
| 415 | ethnic groups | 2 | 69 | 13 | 22 |
| 420 | Psychoneuroimmunology | 5 | 68 | 77 | 267 |
| 420 | Endocrine system | 31 | 68 | 28 | 109 |
| 420 | gene transfer | 1 | 68 | 148 | 68 |
| 420 | genetic transformation | 1 | 68 | 148 | 68 |
| 424 | Medicinal plants | 2 | 66 | 228 | 251 |
| 425 | Human evolution | 1 | 65 | 18 | 14 |
| 425 | human behavior | 3 | 65 | 276 | 488 |
| 427 | Food Science | 7 | 62 | 1 | 1 |
| 427 | environmental exposure | 5 | 62 | 168 | 295 |
| 429 | Pharmaceutical Technology | 4 | 60 | 61 | 139 |
| 430 | Public Policy | 5 | 59 | 94 | 186 |
| 430 | Ethology | 3 | 59 | 86 | 259 |
| 430 | Liposomes | 1 | 59 | 34 | 28 |
| 430 | Chromatographic analysis | 7 | 59 | 95 | 242 |
| 434 | Herbal medicine | 3 | 58 | 135 | 247 |
| 434 | Bacterial infections | 6 | 58 | 87 | 314 |
| 436 | Chromatography | 3 | 57 | 150 | 212 |
| 436 | arthritis | 4 | 57 | 526 | 944 |
| 438 | Optics | 5 | 55 | 118 | 120 |
| 438 | Polymers | 1 | 55 | 333 | 227 |
| 438 | Mutagenesis | 3 | 55 | 17 | 25 |
| 438 | polymerization | 1 | 55 | 210 | 116 |
| 438 | brain mapping | 1 | 55 | 239 | 245 |
| 443 | health services accessibility | 4 | 54 | 91 | 153 |
| 443 | Intellectual disability | 4 | 54 | 105 | 173 |
| 445 | Infections | 7 | 53 | 264 | 789 |
| 445 | chronic disease | 4 | 53 | 49 | 116 |
| 447 | nuclear magnetic resonance spectroscopy | 6 | 52 | 6 | 24 |
| 447 | Cerebral cortex | 2 | 52 | 204 | 281 |
| 449 | Teratology | 1 | 51 | 97 | 91 |
| 450 | Vaccination | 1 | 50 | 96 | 78 |
| 451 | Gerontology | 9 | 49 | 145 | 446 |
| 451 | Plant breeding | 3 | 49 | 5 | 8 |
| 451 | Magnetic Resonance Spectroscopy | 8 | 49 | 48 | 160 |
| 451 | Breeding | 3 | 49 | 18 | 30 |
| 455 | tomography | 3 | 48 | 143 | 202 |
| 456 | Community Psychology | 2 | 47 | 35 | 46 |
| 456 | environmental pollution | 2 | 47 | 251 | 322 |
| 458 | Astronomy | 1 | 46 | 13 | 12 |
| 458 | Plant Genetics | 2 | 46 | 4 | 14 |
| 458 | Geriatric Pharmacology | 6 | 46 | 41 | 175 |
| 458 | Plant physiology | 2 | 46 | 11 | 30 |
| 458 | plant molecular biology | 2 | 46 | 8 | 37 |
| 458 | Solar System | 1 | 46 | 2 | 2 |
| 464 | Rheumatology | 3 | 45 | 650 | 884 |
| 464 | Andrology | 4 | 45 | 130 | 267 |
| 466 | Radiography | 6 | 44 | 131 | 413 |
| 466 | health planning | 2 | 44 | 212 | 248 |
| 468 | Sports Medicine | 7 | 43 | 312 | 716 |
| 468 | Sports | 7 | 43 | 103 | 290 |
| 470 | Occupational Health | 2 | 42 | 169 | 206 |
| 470 | Surface-Active Agents | 1 | 42 | 168 | 168 |
| 470 | Cell division | 3 | 42 | 46 | 117 |
| 470 | Surface properties | 1 | 42 | 168 | 168 |
| 474 | Enteral nutrition | 2 | 41 | 477 | 684 |
| 474 | Tropical Medicine | 2 | 41 | 613 | 617 |
| 476 | Health insurance | 3 | 40 | 71 | 131 |
| 476 | Physical fitness | 2 | 40 | 86 | 163 |
| 476 | health services | 3 | 40 | 144 | 205 |
| 479 | Fungi | 1 | 38 | 27 | 42 |
| 480 | Medical Ethics | 3 | 37 | 206 | 248 |
| 480 | Crystallography | 3 | 37 | 26 | 30 |
| 482 | Hemostasis | 3 | 36 | 333 | 548 |
| 483 | Chemical Ecology | 1 | 35 | 4 | 6 |
| 483 | Environmental Chemistry | 1 | 35 | 29 | 41 |
| 483 | Adolescent Psychology | 1 | 35 | 217 | 203 |
| 483 | Genetic markers | 1 | 35 | 127 | 105 |
| 483 | pheromones | 1 | 35 | 3 | 6 |
| 488 | Mitochondria | 3 | 34 | 35 | 137 |
| 488 | Peptide | 4 | 34 | 10 | 15 |
| 490 | Contraception | 1 | 33 | 264 | 272 |
| 490 | Adipose tissue | 2 | 33 | 11 | 33 |
| 490 | Stress | 1 | 33 | 47 | 50 |
| 493 | Analgesics | 5 | 32 | 2 | 1 |
| 493 | Detectors | 1 | 32 | 91 | 72 |
| 495 | Microcirculation | 3 | 30 | 91 | 213 |
| 495 | Blood vessels | 3 | 30 | 72 | 178 |
| 495 | Yeast | 1 | 30 | 20 | 20 |
| 498 | Computational Chemistry | 2 | 29 | 4 | 7 |
| 498 | Social Psychology | 1 | 29 | 217 | 247 |
| 498 | Adsorption | 1 | 29 | 1 | 1 |
| 501 | Pharmacokinetics | 2 | 28 | 94 | 194 |
| 501 | Amyotrophic Lateral Sclerosis | 1 | 28 | 150 | 160 |
| 501 | Frontotemporal lobar degeneration | 1 | 28 | 122 | 117 |
| 501 | Continuing Education | 2 | 28 | 11 | 24 |
| 501 | Metabolic syndrome | 1 | 28 | 208 | 192 |
| 501 | Freeze-Drying | 1 | 28 | 89 | 87 |
| 501 | Hypothermia | 1 | 28 | 89 | 87 |
| 501 | Freeze Drying | 1 | 28 | 89 | 87 |
| 501 | sociological factors | 3 | 28 | 6 | 3 |
| 510 | Tissue Engineering | 2 | 26 | 94 | 121 |
| 510 | Endocrine glands | 1 | 26 | 112 | 194 |
| 510 | Evidence-Based Medicine | 1 | 26 | 379 | 286 |
| 513 | Evolutionary Genetics | 1 | 25 | 151 | 189 |
| 513 | Molecular Epidemiology | 1 | 25 | 151 | 189 |
| 513 | Nanostructures | 2 | 25 | 199 | 323 |
| 513 | death | 4 | 25 | 6 | 43 |
| 513 | pharmaceutical industry | 2 | 25 | 41 | 70 |
| 518 | Occupational Therapy | 6 | 24 | 97 | 325 |
| 518 | Veterinary Immunology | 2 | 24 | 14 | 33 |
| 518 | occupational health and safety | 2 | 24 | 10 | 20 |
| 518 | industrial hygiene | 2 | 24 | 115 | 156 |
| 518 | sadness | 3 | 24 | 4 | 38 |
| 518 | primary prevention | 2 | 24 | 48 | 114 |
| 518 | scientific societies | 1 | 24 | 408 | 483 |
| 518 | Suicide | 4 | 24 | 40 | 196 |
| 518 | antisocial personality disorder | 3 | 24 | 4 | 38 |
| 518 | Liquid chromatography | 1 | 24 | 45 | 28 |
| 528 | Hematopoiesis | 2 | 23 | 22 | 55 |
| 528 | Bioinorganic chemistry | 1 | 23 | 62 | 92 |
| 528 | Digestive system diseases | 7 | 23 | 273 | 1011 |
| 531 | Metallurgy | 1 | 22 | 14 | 27 |
| 531 | Nanobiotechnology | 1 | 22 | 211 | 280 |
| 531 | Combinatorial chemistry | 2 | 22 | 54 | 156 |
| 531 | Electrochemistry | 1 | 22 | 125 | 136 |
| 535 | Catalysis | 1 | 21 | 54 | 61 |
| 535 | drug resistance | 2 | 21 | 278 | 569 |
| 535 | hygiene | 2 | 21 | 53 | 157 |
| 538 | Plant genetic engineering | 1 | 20 | 32 | 46 |
| 538 | Parasitic Diseases | 1 | 20 | 748 | 972 |
| 538 | Sleep | 4 | 20 | 495 | 978 |
| 541 | Community Psychiatry | 2 | 19 | 345 | 529 |
| 541 | Genetic Research | 1 | 19 | 87 | 106 |
| 541 | Sleep Disorders | 3 | 19 | 588 | 991 |
| 541 | Developmental Neurobiology | 3 | 19 | 50 | 166 |
| 541 | Pituitary gland | 1 | 19 | 171 | 238 |
| 541 | Post-traumatic stress disorder | 1 | 19 | 219 | 312 |
| 541 | gastrointestinal tract | 1 | 19 | 153 | 284 |
| 548 | infection | 3 | 18 | 805 | 1573 |
| 548 | Cerebrospinal fluid | 1 | 18 | 60 | 95 |
| 550 | Happiness | 1 | 17 | 19 | 29 |
| 551 | Food Safety | 2 | 16 | 3 | 27 |
| 551 | food industry | 2 | 16 | 14 | 43 |
| 551 | liver | 1 | 16 | 239 | 336 |
| 554 | Vocational Education | 1 | 15 | 18 | 31 |
| 554 | Vocational guidance | 1 | 15 | 34 | 57 |
| 554 | anesthesia | 1 | 15 | 563 | 548 |
| 557 | Artificial Organs | 2 | 14 | 317 | 473 |
| 557 | Atherosclerosis | 1 | 14 | 121 | 196 |
| 557 | Biofilms | 1 | 14 | 33 | 89 |
| 557 | Microorganisms | 1 | 14 | 171 | 335 |
| 557 | Spectrum analysis | 2 | 14 | 298 | 564 |
| 557 | Egypt | 1 | 14 | 158 | 223 |
| 563 | Orthopedics | 1 | 13 | 1658 | 1842 |
| 563 | Magnetic Resonance Imaging | 1 | 13 | 330 | 384 |
| 563 | Schizophrenia | 1 | 13 | 507 | 694 |
| 563 | Randomized Controlled Trials | 1 | 13 | 986 | 1128 |
| 563 | personality | 1 | 13 | 181 | 250 |
| 563 | Chemical analysis | 1 | 13 | 145 | 230 |
| 563 | ovary | 2 | 13 | 107 | 268 |
| 563 | musculoskeletal system | 1 | 13 | 65 | 107 |
| 563 | Spine | 1 | 13 | 635 | 884 |
| 563 | NMR | 1 | 13 | 9 | 9 |
| 573 | Computer-Aided Design | 1 | 12 | 21 | 49 |
| 573 | patient satisfaction | 1 | 12 | 70 | 77 |
| 573 | Enzyme inhibitors | 1 | 12 | 30 | 78 |
| 573 | Organ transplantation | 1 | 12 | 313 | 368 |
| 577 | Immunotoxicology | 2 | 11 | 45 | 163 |
| 577 | Radiotherapy | 7 | 11 | 119 | 307 |
| 577 | software | 3 | 11 | 128 | 441 |
| 577 | Decision making | 2 | 11 | 175 | 454 |
| 581 | monoclonal antibodies | 1 | 10 | 82 | 110 |
| 581 | Smoking | 1 | 10 | 209 | 379 |
| 581 | Opioids | 1 | 10 | 5 | 18 |
| 584 | Ethics | 1 | 9 | 164 | 284 |
| 584 | Dietetics | 3 | 9 | 188 | 500 |
| 584 | Psychiatric Nursing | 3 | 9 | 90 | 387 |
| 584 | Crystallization | 2 | 9 | 9 | 24 |
| 584 | X-ray crystallography | 2 | 9 | 27 | 47 |
| 584 | recreation | 1 | 9 | 22 | 58 |
| 590 | Parasitology | 1 | 8 | 362 | 603 |
| 590 | synthesis | 1 | 8 | 13 | 24 |
| 592 | Ceramic materials | 1 | 7 | 10 | 35 |
| 592 | men | 1 | 7 | 59 | 133 |
| 592 | Adolescent | 2 | 7 | 722 | 1240 |
| 595 | Systems Engineering | 1 | 6 | 37 | 111 |
| 595 | Pediatric Dermatology | 1 | 6 | 366 | 566 |
| 595 | Cybernetics | 2 | 6 | 52 | 195 |
| 595 | Oncology Nursing | 1 | 6 | 6 | 4 |
| 595 | Numerical Analysis | 2 | 6 | 19 | 113 |
| 595 | Synaptic Transmission | 1 | 6 | 235 | 431 |
| 595 | Entropy | 1 | 6 | 43 | 83 |
| 595 | feeding behavior | 2 | 6 | 102 | 300 |
| 595 | Thorax | 1 | 6 | 374 | 662 |
| 595 | Appetite | 2 | 6 | 68 | 246 |
| 605 | Behavioral Genetics | 1 | 5 | 41 | 90 |
| 605 | Radiation Protection | 1 | 5 | 187 | 274 |
| 605 | Nutrition physiology | 1 | 5 | 179 | 356 |
| 605 | radiation monitoring | 1 | 5 | 175 | 262 |
| 605 | Radiation dosimetry | 1 | 5 | 119 | 185 |
| 605 | diseases | 1 | 5 | 171 | 376 |
| 605 | Disease | 1 | 5 | 176 | 381 |
| 612 | Adolescent Medicine | 1 | 4 | 403 | 667 |
| 612 | disabilities | 1 | 4 | 359 | 630 |
| 612 | cross-cultural comparison | 1 | 4 | 245 | 419 |
| 612 | Bone diseases | 1 | 4 | 365 | 646 |
| 612 | minority groups | 1 | 4 | 1 | 10 |
| 617 | Animal Biotechnology | 2 | 3 | 1 | 19 |
| 617 | Precision medicine | 1 | 3 | 131 | 272 |
| 617 | food technology | 1 | 3 | 254 | 475 |
| 617 | Neuromuscular diseases | 1 | 3 | 442 | 777 |
| 621 | Geography | 1 | 2 | 15 | 32 |
| 621 | Environmental Microbiology | 1 | 2 | 198 | 445 |
| 621 | Oral Medicine | 1 | 2 | 255 | 514 |
| 621 | Industrial Safety | 1 | 2 | 195 | 404 |
| 621 | Pacific Islands | 1 | 2 | 60 | 165 |
| 621 | Asia | 1 | 2 | 697 | 1083 |
| 621 | Safety management | 1 | 2 | 181 | 403 |
| 621 | extraterrestrial environment | 1 | 2 | 17 | 47 |
| 621 | mathematical concepts | 2 | 2 | 16 | 135 |
| 621 | Radiation effects | 1 | 2 | 17 | 39 |
| 621 | Pancreatic diseases | 2 | 2 | 186 | 541 |
| 632 | Education | 1 | 1 | 367 | 654 |
| 632 | Cultural Studies | 1 | 1 | 13 | 56 |
| 632 | Photonics | 1 | 1 | 145 | 304 |
| 632 | Mental Health | 1 | 1 | 623 | 1128 |
| 632 | Physical organic chemistry | 1 | 1 | 59 | 162 |
| 632 | Geographic information systems | 1 | 1 | 13 | 44 |
| 632 | Religion | 1 | 1 | 18 | 72 |
| 632 | epidemiologic methods | 1 | 1 | 23 | 79 |
| 632 | urban health | 1 | 1 | 60 | 143 |
| 632 | Religion and Culture | 1 | 1 | 15 | 62 |
| 632 | Religion and Psychology | 1 | 1 | 91 | 243 |
| 632 | orphan drugs | 1 | 1 | 50 | 111 |
| 632 | Screening | 1 | 1 | 95 | 257 |
| 632 | rare diseases | 1 | 1 | 559 | 957 |
| 632 | Psychiatric Epidemiology | 1 | 1 | 226 | 469 |
| 632 | Culture | 1 | 1 | 44 | 118 |
| 632 | mortality | 1 | 1 | 2 | 18 |
| 632 | Gastrointestinal diseases | 1 | 1 | 735 | 1362 |
| 632 | Bereavement | 1 | 1 | 20 | 65 |
| 651 | Health Services Administration | 1 | 0 | 303 | 678 |
| 651 | Ergonomics | 1 | 0 | 139 | 262 |
| 651 | Photography | 4 | 0 | 104 | 367 |
| 651 | Mathematical Physics | 1 | 0 | 25 | 65 |
| 651 | Dialysis | 1 | 0 | 140 | 234 |
| 651 | Hemodialysis | 1 | 0 | 79 | 117 |
| 651 | stem cell transplantation | 1 | 0 | 62 | 130 |
| 651 | Neurotransmitters | 1 | 0 | 254 | 372 |
| 651 | Electron Microscopy | 1 | 0 | 98 | 254 |
| 651 | risk factors | 1 | 0 | 479 | 832 |
| 651 | Developmental Disabilities | 1 | 0 | 331 | 623 |
| 651 | grief | 1 | 0 | 12 | 32 |
| 651 | Statistical physics | 1 | 0 | 53 | 135 |