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City · Netherlands

Research in Leiden

Science Explorer records 62 research institutions in Leiden, Netherlands. The highest-ranked on research quality in 2022-now are Leiden University, University of Applied Sciences Leiden and Naturalis Biodiversity Center.

Research institutions
62
8 of them ranked worldwide
Research works
102k
▼ 3% vs 2018-21
Citations
3.6M
34.8 per fractional work, all time
Top-10% rate, 2022-now
25.8%
all institutions 10.0%
Active span
1950-2026
77 years on the record

A city carries no overall standing here. The quality score is built for institutions and countries, the units its floors and field normalisation were designed around. An empty rank on this page is a statement about the measure, not about the place.

Which research institutions are in Leiden?

#InstitutionWorksAgainst the largest hereWorld rank
1Leiden UniversityUniversity 87,790 #125
2Naturalis Biodiversity CenterArchive 2,664 #5,753
3Space Research Organisation NetherlandsResearch facility 1,793 #14,107
4University of Applied Sciences LeidenUniversity 1,731 #2,042
5Centre for Human Drug ResearchResearch facility 1,730 #10,619
6African Studies CentreResearch facility 1,320 #15,069
7Charles River Laboratories (Netherlands)Company 479 #20,560
8Netherlands Consortium for Healthy AgeingHospital / health system 302 #18,078 all time
9Alrijne ZiekenhuisHospital / health system 288 #20,208
10EurotransplantNonprofit 269 #24,967 all time
11Leyden Academy on Vitality and AgeingResearch facility 259 #22,096 all time
12International Institute for Asian StudiesResearch facility 221 #22,911 all time
13Astellas Pharma (Netherlands)Company 200 #24,683 all time
14European Society for Blood and Marrow TransplantationNonprofit 187 #26,441 all time
15GGZ RivierduinenHospital / health system 146 #30,099 all time
16Pharming Group (Netherlands)Company 131 #34,403 all time
17Museum BoerhaaveArchive 126 #27,215 all time
18National Museum of EthnologyArchive 124 #33,391 all time
19Willem-Alexander KinderziekenhuisHospital / health system 114 not ranked
20Lorentz CenterInstitution 114 not ranked
21Dutch Institute for Clinical AuditingNonprofit 105 not ranked
22Cosine (Netherlands)Company 96 not ranked
23Airbus (Netherlands)Company 84 not ranked
24Mimetas (Netherlands)Company 81 not ranked
25Centre for Medical Systems BiologyResearch facility 68 not ranked
26ProQR Therapeutics (Netherlands)Company 66 not ranked
27NTI UniversityUniversity 62 not ranked
28Instituut voor de Nederlandse TaalUniversity 54 not ranked
29SIR Institute for Pharmacy Practice and PolicyInstitution 52 not ranked
30Galapagos (Netherlands)Company 48 not ranked
31Europdonor FoundationNonprofit 48 not ranked
32Jon J van Rood Centre for Clinical Transfusion ResearchInstitution 44 not ranked
33Rijnlands Revalidatie CentrumInstitution 43 not ranked
34ISA Pharmaceuticals (Netherlands)Company 38 not ranked
35DuPont (Netherlands)Company 35 not ranked
36Swets (Netherlands)Company 30 not ranked
37National Museum of AntiquitiesArchive 28 not ranked
38Center for Technology & Innovation ManagementUniversity 27 not ranked
39HAL Allergy (Netherlands)Company 26 not ranked
40Hazenberg Archeologie (Netherlands)Company 23 not ranked
41Archol (Netherlands)Company 20 not ranked
42BioMarin (Netherlands)Company 18 not ranked
43ZF Screens (Netherlands)Company 18 not ranked
44GBS LeidenInstitution 17 not ranked
45GenomeScan (Netherlands)Company 17 not ranked
46Xendo (Netherlands)Company 15 not ranked
47Batavia Biosciences (Netherlands)Company 14 not ranked
48ServiceXS (Netherlands)Company 12 not ranked
49Top Institute PharmaResearch facility 10 not ranked
50Culgi (Netherlands)Company 10 not ranked
51European Uro Oncology GroupNonprofit 9 not ranked
52BBB Therapeutics (Netherlands)Company 8 not ranked
53AnyWi Technologies (Netherlands)Company 6 not ranked
54Dr. Reddy's Laboratories (Netherlands)Company 5 not ranked
55European Health Psychology SocietyInstitution 4 not ranked
56CrisisplanInstitution 4 not ranked
57Gemeente LeidenGovernment institution 3 not ranked
58World Marrow Donor AssociationNonprofit 3 not ranked
59BonaventuracollegeUniversity 2 not ranked
60International Step by Step AssociationInstitution 2 not ranked

By fractional works over the whole record; world rank on research quality in 2022-now. Bars are scaled to the largest institution in this city, not to anything off the page.

How concentrated the city is

The same institutions as shares of everything the list accounts for. A city that is one university and a city that is twelve read alike as a table and not at all alike here.

Leiden University: 86.7%Naturalis Biodiversity Center: 2.6%Space Research Organisation Netherlands: 1.8%University of Applied Sciences Leiden: 1.7%56 others listed: 7.2%87%largest
Leiden University88k · 86.7%Naturalis Biodiversity Center2,664 · 2.6%Space Research Organisation Netherlands1,793 · 1.8%University of Applied Sciences Leiden1,731 · 1.7%56 others listed7,265 · 7.2%

Shares of the rows listed above, not of the whole node.

Which fields of science does Leiden work in?

In 2022-now, 30% of research in Leiden is in Health Sciences, 30% in Social Sciences. Its largest fields are Medicine (27%), Social Sciences (16%), Biochemistry, Genetics and Molecular Biology (8%). It does 1.3× the world's share of Life Sciences.

Health Sciences: 4,817 fractional works · 30.2% of its workMedicine: 4,363 fractional works · 27.3% of its workSurgery: 496 fractional works · 3.1% of its workCardiology and Cardiovascular Medicine: 353 fractional works · 2.2% of its workPulmonary and Respiratory Medicine: 339 fractional works · 2.1% of its workEpidemiology: 321 fractional works · 2.0% of its workOncology: 296 fractional works · 1.9% of its workPublic Health, Environmental and Occupational Health: 254 fractional works · 1.6% of its workRadiology, Nuclear Medicine and Imaging: 234 fractional works · 1.5% of its workRheumatology: 213 fractional works · 1.3% of its workPhysiology: 178 fractional works · 1.1% of its workPsychiatry and Mental health: 151 fractional works · 0.9% of its workPediatrics, Perinatology and Child Health: 140 fractional works · 0.9% of its workNeurology: 134 fractional works · 0.8% of its workInfectious Diseases: 132 fractional works · 0.8% of its workEndocrinology, Diabetes and Metabolism: 109 fractional works · 0.7% of its workPathology and Forensic Medicine: 107 fractional works · 0.7% of its workHematology: 103 fractional works · 0.6% of its workPharmacology: 88 fractional works · 0.6% of its workObstetrics and Gynecology: 65 fractional works · 0.4% of its workGenetics: 63 fractional works · 0.4% of its workNephrology: 52 fractional works · 0.3% of its workOphthalmology: 46 fractional works · 0.3% of its workDermatology: 43 fractional works · 0.3% of its workInternal Medicine: 38 fractional works · 0.2% of its workHepatology: 38 fractional works · 0.2% of its workEmergency Medicine: 36 fractional works · 0.2% of its workTransplantation: 34 fractional works · 0.2% of its workReproductive Medicine: 33 fractional works · 0.2% of its workSmaller subfields together: 267 fractional works · 1.7% of its workHealth Professions: 382 fractional works · 2.4% of its workGeneral Health Professions: 256 fractional works · 1.6% of its workSmaller subfields together: 126 fractional works · 0.8% of its workNursing: 38 fractional works · 0.2% of its workVeterinary: 20 fractional works · 0.1% of its workDentistry: 14 fractional works · 0.1% of its workSocial Sciences: 4,811 fractional works · 30.1% of its workSocial Sciences: 2,523 fractional works · 15.8% of its workSociology and Political Science: 797 fractional works · 5.0% of its workPolitical Science and International Relations: 641 fractional works · 4.0% of its workAnthropology: 213 fractional works · 1.3% of its workEducation: 190 fractional works · 1.2% of its workLaw: 136 fractional works · 0.9% of its workGender Studies: 64 fractional works · 0.4% of its workSafety Research: 64 fractional works · 0.4% of its workCultural Studies: 60 fractional works · 0.4% of its workLinguistics and Language: 52 fractional works · 0.3% of its workDemography: 50 fractional works · 0.3% of its workCommunication: 43 fractional works · 0.3% of its workHealth: 42 fractional works · 0.3% of its workGeography, Planning and Development: 34 fractional works · 0.2% of its workPublic Administration: 34 fractional works · 0.2% of its workSmaller subfields together: 102 fractional works · 0.6% of its workArts and Humanities: 799 fractional works · 5.0% of its workLanguage and Linguistics: 165 fractional works · 1.0% of its workHistory: 139 fractional works · 0.9% of its workArcheology: 120 fractional works · 0.8% of its workPhilosophy: 94 fractional works · 0.6% of its workLiterature and Literary Theory: 84 fractional works · 0.5% of its workHistory and Philosophy of Science: 58 fractional works · 0.4% of its workReligious studies: 35 fractional works · 0.2% of its workSmaller subfields together: 104 fractional works · 0.7% of its workPsychology: 729 fractional works · 4.6% of its workClinical Psychology: 258 fractional works · 1.6% of its workExperimental and Cognitive Psychology: 171 fractional works · 1.1% of its workSocial Psychology: 169 fractional works · 1.1% of its workDevelopmental and Educational Psychology: 77 fractional works · 0.5% of its workApplied Psychology: 46 fractional works · 0.3% of its workSmaller subfields together: 9 fractional works · 0.1% of its workBusiness, Management and Accounting: 285 fractional works · 1.8% of its workStrategy and Management: 122 fractional works · 0.8% of its workOrganizational Behavior and Human Resource Management: 48 fractional works · 0.3% of its workAccounting: 39 fractional works · 0.2% of its workSmaller subfields together: 77 fractional works · 0.5% of its workEconomics, Econometrics and Finance: 283 fractional works · 1.8% of its workEconomics and Econometrics: 204 fractional works · 1.3% of its workFinance: 51 fractional works · 0.3% of its workSmaller subfields together: 27 fractional works · 0.2% of its workDecision Sciences: 191 fractional works · 1.2% of its workInformation Systems and Management: 66 fractional works · 0.4% of its workManagement Science and Operations Research: 60 fractional works · 0.4% of its workStatistics, Probability and Uncertainty: 58 fractional works · 0.4% of its workSmaller subfields together: 8 fractional works · 0.0% of its workPhysical Sciences: 3,554 fractional works · 22.3% of its workComputer Science: 780 fractional works · 4.9% of its workArtificial Intelligence: 354 fractional works · 2.2% of its workInformation Systems: 133 fractional works · 0.8% of its workComputational Theory and Mathematics: 83 fractional works · 0.5% of its workComputer Vision and Pattern Recognition: 82 fractional works · 0.5% of its workComputer Networks and Communications: 37 fractional works · 0.2% of its workSmaller subfields together: 91 fractional works · 0.6% of its workEnvironmental Science: 675 fractional works · 4.2% of its workEcology: 195 fractional works · 1.2% of its workGlobal and Planetary Change: 137 fractional works · 0.9% of its workNature and Landscape Conservation: 56 fractional works · 0.4% of its workHealth, Toxicology and Mutagenesis: 53 fractional works · 0.3% of its workManagement, Monitoring, Policy and Law: 52 fractional works · 0.3% of its workEnvironmental Engineering: 46 fractional works · 0.3% of its workEcological Modeling: 39 fractional works · 0.2% of its workPollution: 36 fractional works · 0.2% of its workSmaller subfields together: 60 fractional works · 0.4% of its workPhysics and Astronomy: 671 fractional works · 4.2% of its workAstronomy and Astrophysics: 353 fractional works · 2.2% of its workAtomic and Molecular Physics, and Optics: 116 fractional works · 0.7% of its workNuclear and High Energy Physics: 50 fractional works · 0.3% of its workInstrumentation: 50 fractional works · 0.3% of its workStatistical and Nonlinear Physics: 47 fractional works · 0.3% of its workSmaller subfields together: 54 fractional works · 0.3% of its workEngineering: 529 fractional works · 3.3% of its workBiomedical Engineering: 204 fractional works · 1.3% of its workElectrical and Electronic Engineering: 98 fractional works · 0.6% of its workAerospace Engineering: 39 fractional works · 0.2% of its workMechanical Engineering: 35 fractional works · 0.2% of its workSmaller subfields together: 153 fractional works · 1.0% of its workEarth and Planetary Sciences: 255 fractional works · 1.6% of its workPaleontology: 90 fractional works · 0.6% of its workOceanography: 63 fractional works · 0.4% of its workAtmospheric Science: 58 fractional works · 0.4% of its workSmaller subfields together: 43 fractional works · 0.3% of its workMathematics: 197 fractional works · 1.2% of its workStatistics and Probability: 84 fractional works · 0.5% of its workMathematical Physics: 40 fractional works · 0.2% of its workSmaller subfields together: 73 fractional works · 0.5% of its workChemistry: 188 fractional works · 1.2% of its workOrganic Chemistry: 73 fractional works · 0.5% of its workSpectroscopy: 64 fractional works · 0.4% of its workSmaller subfields together: 51 fractional works · 0.3% of its workMaterials Science: 165 fractional works · 1.0% of its workMaterials Chemistry: 85 fractional works · 0.5% of its workBiomaterials: 49 fractional works · 0.3% of its workSmaller subfields together: 31 fractional works · 0.2% of its workEnergy: 73 fractional works · 0.5% of its workRenewable Energy, Sustainability and the Environment: 65 fractional works · 0.4% of its workSmaller subfields together: 8 fractional works · 0.0% of its workChemical Engineering: 22 fractional works · 0.1% of its workLife Sciences: 2,785 fractional works · 17.4% of its workBiochemistry, Genetics and Molecular Biology: 1,342 fractional works · 8.4% of its workMolecular Biology: 776 fractional works · 4.9% of its workGenetics: 249 fractional works · 1.6% of its workCancer Research: 91 fractional works · 0.6% of its workCell Biology: 63 fractional works · 0.4% of its workBiotechnology: 42 fractional works · 0.3% of its workSmaller subfields together: 121 fractional works · 0.8% of its workAgricultural and Biological Sciences: 617 fractional works · 3.9% of its workEcology, Evolution, Behavior and Systematics: 305 fractional works · 1.9% of its workPlant Science: 141 fractional works · 0.9% of its workInsect Science: 60 fractional works · 0.4% of its workFood Science: 39 fractional works · 0.2% of its workSmaller subfields together: 73 fractional works · 0.5% of its workNeuroscience: 417 fractional works · 2.6% of its workCognitive Neuroscience: 198 fractional works · 1.2% of its workCellular and Molecular Neuroscience: 86 fractional works · 0.5% of its workEndocrine and Autonomic Systems: 38 fractional works · 0.2% of its workNeurology: 37 fractional works · 0.2% of its workSmaller subfields together: 58 fractional works · 0.4% of its workImmunology and Microbiology: 356 fractional works · 2.2% of its workImmunology: 297 fractional works · 1.9% of its workSmaller subfields together: 59 fractional works · 0.4% of its workPharmacology, Toxicology and Pharmaceutics: 53 fractional works · 0.3% of its workALL ITS WORKLeiden16kfractional works, 2022-now
Life Sciences17%Physical Sciences22%Health Sciences30%Social Sciences30%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this city does than the world.

Its 4 domains and 26 fields, with their numbers
  1. Health Sciences4,81730.2%
    1. Medicine4,36327.3%
    2. Health Professions3822.4%
    3. Nursing380.2%
    4. Veterinary200.1%
    5. Dentistry140.1%
  2. Social Sciences4,81130.1%
    1. Social Sciences2,52315.8%
    2. Arts and Humanities7995.0%
    3. Psychology7294.6%
    4. Business, Management and Accounting2851.8%
    5. Economics, Econometrics and Finance2831.8%
    6. Decision Sciences1911.2%
    1. Computer Science7804.9%
    2. Environmental Science6754.2%
    3. Physics and Astronomy6714.2%
    4. Engineering5293.3%
    5. Earth and Planetary Sciences2551.6%
    6. Mathematics1971.2%
    7. Chemistry1881.2%
    8. Materials Science1651.0%
    9. Energy730.5%
    10. Chemical Engineering220.1%
  3. Life Sciences2,78517.4%
    1. Biochemistry, Genetics and Molecular Biology1,3428.4%
    2. Agricultural and Biological Sciences6173.9%
    3. Neuroscience4172.6%
    4. Immunology and Microbiology3562.2%
    5. Pharmacology, Toxicology and Pharmaceutics530.3%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What is Leiden strongest at in research?

Relative to its size, research in Leiden is most concentrated in Instrumentation, Transplantation and Anthropology (5.4× the world share in Instrumentation).

  1. InstrumentationSubfield · 37.3 works5.4×
  2. TransplantationSubfield · 30.8 works5.0×
  3. AnthropologySubfield · 191.7 works4.9×
  4. Astronomy and AstrophysicsSubfield · 312.4 works4.3×
  5. Public AdministrationSubfield · 31.5 works4.2×
  6. Internal MedicineSubfield · 34.0 works4.0×
← less than its size predicts1×more →

Location quotient against the world baseline. Inside a single field a city is a meaningful unit, which is why this is where a city is measured at all.

The whole field profile

All 26 fields at once: above the ring is more than a place this size would be expected to do. A specialist and a generalist produce the same ranked list and a completely different shape.

Agricultural and Biological Sciences: 0.69× its world share, 455 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.56× its world share, 1,148 worksBiochemistry, Geneti…Immunology and Microbiology: 2.30× its world share, 320 worksImmunology and Micro…Neuroscience: 1.63× its world share, 365 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.94× its world share, 46 worksPharmacology, Toxico…Chemical Engineering: 0.40× its world share, 20 worksChemical EngineeringChemistry: 0.75× its world share, 164 worksChemistryComputer Science: 0.62× its world share, 666 worksComputer ScienceEarth and Planetary Sciences: 0.85× its world share, 185 worksEarth and Planetary …Energy: 0.49× its world share, 62 worksEnergyEngineering: 0.23× its world share, 468 worksEngineeringEnvironmental Science: 0.78× its world share, 534 worksEnvironmental ScienceMaterials Science: 0.28× its world share, 135 worksMaterials ScienceMathematics: 1.07× its world share, 175 worksMathematicsPhysics and Astronomy: 1.92× its world share, 589 worksPhysics and AstronomyDentistry: 0.19× its world share, 12 worksDentistryHealth Professions: 0.93× its world share, 339 worksHealth ProfessionsMedicine: 1.46× its world share, 3,871 worksMedicineNursing: 0.51× its world share, 34 worksNursingVeterinary: 0.85× its world share, 16 worksVeterinaryArts and Humanities: 1.77× its world share, 707 worksArts and HumanitiesBusiness, Management and Accounting: 0.57× its world share, 255 worksBusiness, Management…Decision Sciences: 1.19× its world share, 158 worksDecision SciencesEconomics, Econometrics and Finance: 0.85× its world share, 253 worksEconomics, Econometr…Psychology: 1.50× its world share, 632 worksPsychologySocial Sciences: 1.27× its world share, 2,217 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Immunology and Microbiology, 2.3×. Every wedge is a field page.

All 26 fields, with their numbers
  1. Immunology and Microbiology2.30×320 works
  2. Physics and Astronomy1.92×589 works
  3. Arts and Humanities1.77×707 works
  4. Neuroscience1.63×365 works
  5. Biochemistry, Genetics and Molecular Biology1.56×1,148 works
  6. Psychology1.50×632 works
  7. Medicine1.46×3,871 works
  8. Social Sciences1.27×2,217 works
  9. Decision Sciences1.19×158 works
  10. Mathematics1.07×175 works
  11. Pharmacology, Toxicology and Pharmaceutics0.94×46 works
  12. Health Professions0.93×339 works
  13. Earth and Planetary Sciences0.85×185 works
  14. Veterinary0.85×16 works
  15. Economics, Econometrics and Finance0.85×253 works
  16. Environmental Science0.78×534 works
  17. Chemistry0.75×164 works
  18. Agricultural and Biological Sciences0.69×455 works
  19. Computer Science0.62×666 works
  20. Business, Management and Accounting0.57×255 works
  21. Nursing0.51×34 works
  22. Energy0.49×62 works
  23. Chemical Engineering0.40×20 works
  24. Materials Science0.28×135 works
  25. Engineering0.23×468 works
  26. Dentistry0.19×12 works

Which keywords describe research in Leiden?

By fractional works in 2022-now, weighted toward what it does more of than the world: Epidemiology, Inflammation, Globalization, Human Rights, Invasive Species, Biodiversity, Biogeography and Climate Change.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this city's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology704◆ 1.11×136 topics
  2. Inflammation516▲ 1.52×83 topics
  3. Globalization487▲ 1.55×136 topics
  4. Climate Change466◆ 1.07×105 topics
  5. Human Rights338▲ 2.1×77 topics
  6. Biodiversity297▲ 2.4×36 topics
  7. Treatment268▲ 1.38×50 topics
  8. Mental Health260◆ 1.14×46 topics
  9. Quality of Life252◆ 1.09×57 topics
  10. Invasive Species242▲ 3.6×20 topics
  11. Cancer241◆ 1.12×53 topics
  12. Depression210▲ 1.49×26 topics
  13. Biogeography208▲ 4.7×20 topics
  14. Risk Factors206▲ 1.17×37 topics
  15. Nationalism205▲ 2.9×32 topics
  16. Immunotherapy199▲ 1.73×19 topics
  17. Colonialism196▲ 2.6×42 topics
  18. History193▲ 1.74×51 topics
  19. Clinical Practice Guidelines178▲ 2.0×14 topics
  20. Religion164▲ 2.2×37 topics
  21. Democracy161▲ 2.9×25 topics
  22. International Law157▲ 3.1×28 topics
  23. Phylogeny156▲ 5.8×17 topics
  24. Global Governance147▲ 3.8×22 topics
  25. Evolution143▲ 3.4×18 topics
  26. Autoantibodies140▲ 3.8×8 topics
  27. Cardiovascular Risk137▲ 2.7×9 topics
  28. Taxonomy128▲ 5.5×15 topics
  29. Cytokines126▲ 2.7×8 topics
  30. Habitat Fragmentation124▲ 3.6×5 topics
  31. Echocardiography124▲ 2.8×8 topics
  32. Global Change120▲ 2.8×6 topics
  33. Ecology118▲ 4.3×10 topics
  34. Molecular Phylogeny118▲ 4.5×12 topics
  35. Star Formation113▲ 13×2 topics
  36. DNA Barcoding104▲ 3.7×9 topics
  37. Public Opinion97▲ 5.0×6 topics
  38. Magnetic Fields88▲ 8.3×3 topics
  39. Accretion Disks88▲ 11×2 topics
  40. Black Holes87▲ 5.7×3 topics

What research is done in Leiden?

  1. 1 Rheumatoid Arthritis Research and Therapies Rheumatology 57 works
  2. 2 Stellar, planetary, and galactic studies Astronomy and Astrophysics 56 works
  3. 3 Astrophysics and Star Formation Studies Astronomy and Astrophysics 53 works
  4. 4 Plant and animal studies Ecology, Evolution, Behavior and Systematics 48 works
  5. 5 Galaxies: Formation, Evolution, Phenomena Astronomy and Astrophysics 46 works
  6. 6 Cardiac Valve Diseases and Treatments Cardiology and Cardiovascular Medicine 45 works
  7. 7 Immunotherapy and Immune Responses Immunology 42 works
  8. 8 Monoclonal and Polyclonal Antibodies Research Radiology, Nuclear Medicine and Imaging 40 works
  9. 9 Cardiac Imaging and Diagnostics Radiology, Nuclear Medicine and Imaging 38 works
  10. 10 CAR-T cell therapy research Oncology 38 works

Research output over time

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting20%40%Leiden21.6% in 2025all institutions10.0% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 35.6% in 2016.

Discussion

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