LinkOut Providers
There are two types of LinkOut providers listed below:
- Full text providers supply links to the full text of specific PubMed citations to their online full-text version of the article. These links may require users to authenticate themselves to gain access.
- Other providers including datasets and scientific databases supply links to their online resources from specific PubMed citations as well as from other NCBI databases. Authentication may also be required for users to access the resources.
Searches for all records in PubMed and in other NCBI databases with links to a specific LinkOut provider's online resources can be done by appending the provider's abbreviation (case sensitive) to loprov in the search field, e.g. to find all the citations in PubMed with links to the full text of articles published by the American Society for Clinical Investigation (ASCI) on their site, you would add this to your search: loprovASCI[filter].
Listed below are all LinkOut providers for NCBI databases including PubMed and their provider abbreviation in parenthesis.
As of April 23, 2024, there are 727 LinkOut providers.
- AboutScience (aboutscience)
- Academy Of Medical Sciences of I.R. of Iran (Amsir)
- Academy of Traditional Chinese Medicine (atrachim)
- Acta Biochemica Polonica, Inc. (polbio)
- Acta Gastro-Enterologica Belgica (ageb)
- Acta Medica Academica (asabh)
- Acta Pharmacologica Sinica (Chinasci)
- Acta Physiologica Sinica (Sibs)
- Actionbacteriophage Database (actbacpdb)
- Addgene Non-profit plasmid repository (addgene)
- AEPress, s r. o. (AEPress)
- Ainosco Press (airitip)
- The Alan Guttmacher Institute (guttmach)
- ALFRED: The Allele Frequency Database (ALFRED)
- AlgaeBase (AlgaeBase)
- Allergy and Immunology Society of Thailand (alimsthai)
- Aluna Publishing (Wydawnictwo Aluna) (imd)
- AlzPED National Institute on Aging (AlzPED)
- AME Publishing Company (amepub)
- American Academy of Family Physicians (AAFP)
- American Academy of Sleep Medicine (asleepmed)
- American Chemical Society (ACS)
- American Institute of Mathematical Sciences and Beihang University (aimsbu)
- American Medical Association (ama)
- American Nurses Association (ANA)
- The American Ophthalmological Society (aos)
- American Physical Society (APS)
- American Psychological Association (APA)
- American Society for Clinical Investigation (ASCI)
- Amphibian Species of the World (ASW)
- AmphibiaWeb (amphiweb)
- Amway Herbarium (amwayherb)
- Andalusian Health Repository (RSAndal)
- Angiosperm Phylogeny Website (APweb)
- Animal Diversity Web (ADW)
- AnimalBase (AnimalBase)
- Annals, Academy of Medicine, Singapore (SACMED)
- AntWeb (AntWeb)
- The Arabidopsis Information Resource (TAIR)
- Aran ediciones, S.L. (Aran)
- Archivio Istituzionale della Ricerca Unimi (AIR)
- Archivos Espanoles de Urologia (iniestares)
- Arctos Specimen Database (Arctos)
- Area de Conservacion Guanacaste (ACG)
- Ariesdue Srl (ARIESDUE)
- Armed Forces Health Surveillance Branch (afhsc)
- Arthur C Huntley MD, California Digital Library (DOJ)
- ArTS, University of Trieste (itartsuts)
- Asian Pacific Organization for Cancer Prevention (apocp)
- Asian Society of Gynecologic Oncology; Korean Society of Gynecologic Oncology (kosgyoc)
- Asociacion Espanola de Bioetica y Etica Medica (aebi)
- Association of Basic Medical Sciences Federation of Bosnia and Herzegovina (bjbms)
- Atlantis Press (Atlantis)
- Atypon (ATYPON)
- Aula Medica (aulamed)
- Australasian Medical Publishing Company (Austmed)
- Australian Family Physician (racgp)
- Aves Yayincilik (aves)
- Ayub Medical College (ayubmedcoll)
- BacDive (bacdive)
- Bacterial and Viral Bioinformatics Resource Center (IRD)
- Bacterial and Viral Bioinformatics Resource Center (ViPR)
- Baishideng Publishing Group Inc. (BPG)
- Barcodes of Life (BoLD)
- Baskent University, Publishers (basuni)
- Baycinar Tibbi Yayincilik (baycinar)
- BCS Learning and Development (bcs)
- Bee Genera of the World (BeeGen)
- BegellHouse Publisher, Inc. (begell)
- Bentham Science Publishers Ltd. (bentham)
- Bern Open Repository and Information System (BORIS)
- Bgee database (bgeedb)
- Bicocca Open Archive UniMiB (BOA) (boaunimib)
- Bilimsel Tip Publishing House (bilimsel)
- BindingDB (BindingDB)
- Bio-101 Improve Research Reproducibility (b101respro)
- Bio-Analytic Resource (bioarray)
- Bio-Protocol, LLC (bioprotocol)
- Biochemistry (Moscow) (BCM)
- BioCyc (BioCyc)
- BioGPS (BioGPS)
- BioGRID Open Repository of CRISPR Screens (ORCS) (biogridorcs)
- Bioimages.vanderbilt.edu (Bioimages)
- BioMed Central (BMC)
- BioOne (bioone)
- Biospecimen Research Database (ncibrd)
- BMJ Publishing Group (bmjgrp)
- The British Editorial Society of Bone & Joint Surgery (bonejointp)
- Bugwood Network (University of Georgia) (Bugwood)
- Bulletin of the NYU Hospital for Joint Diseases (BHJD)
- Butterflies and Moths of the World (ButMoth)
- Cairn (cairn)
- CalPhotos (CalPhotos)
- Cambridge University Press (camup)
- Canada Communicable Disease Report (ccdr)
- Canadian Center of Science and Education (ccse)
- Canadian Dental Association (CDA)
- The Canadian Journal of Urology (canurol)
- Canadian Society for Pharmaceutical Sciences (CSPS)
- Cancer Center,Sun Yat-sen University (CCSYU)
- Cardiovascular Journal of Africa (Safrica)
- Catalog of Sphecidae (sphecids)
- Catholic University in Rome, Institute of Hematology (cathurome)
- CDC - Morbidity and Mortality Weekly Report (MMWR)
- CDC-NCEZID (CDC)
- Cell Physiol Biochem Press GmbH Co KG (cpbpress)
- Cellosaurus - a cell line knowledge resource (Cellosaurus)
- Centers for Disease Control and Prevention (cdcpcd)
- CENTRAL SOUTH UNIVERSITY (jcsuph)
- Centre Mersenne (mersenne)
- Cenveo Publisher Services (cenveo)
- Ceska spolecnost pro ortopedii a traumatologii (CSPOT)
- Chang Gung Medical Hospital (ChangGung)
- Chapman University Digital Commons (ChapmanUDC)
- Charles University in Prague (chunipg)
- China Science Publishing and Media Ltd. (SHANGBIO)
- Chinese Academy of Medical Sciences (chinacam)
- Chinese Center for Disease Control and Prevention (chinacdc)
- Chinese Journal of Contemporary Pediatrics (cjcpub)
- Chinese Medical Association Publishing House Ltd. (CMAPH)
- Chonnam National University Medical School (chonnatu)
- Clarivate Analytics (Clarivate)
- Clinical and Experimental Rheumatology (cersas)
- Clinical Care Targeted Communications Group, LLC (MCHC)
- Clinical Laboratory (clinlabpub)
- ClinicalKey (clinicalk)
- ClinicalKey Nursing (clinknursing)
- CMI Editorial Board (cmiedb)
- Cold Spring Harbor Laboratory (cospharlab)
- Coleoptera Home Page (beetles)
- Collaborative Study on the Genetics of Alcoholism (coga)
- College of Pathologists, Academy of Medicine of Malaysia (macpatho)
- Colombian National Health Institute (cnhi)
- COMputational BRidges to Experiments (combrex)
- The Conus Biodiversity Website (ConusBiodiversity)
- COPD Foundation (copdfoun)
- Copernicus Publications GmbH (copernipub)
- CORE (coreopen)
- Coriell Cell Repositories (CCR)
- Cornell University - Hathi Trust (cornellht)
- Corpus, Universite Laval (CorpusUL)
- CortBase (cortbase)
- cpnDB: A Chaperonin Database (cpnDB)
- Creative Biogene (crebiogene)
- Creative Biomart (cbiomart)
- CREB Target Gene Database (CREBDB)
- The Croatian Society of Medical Biochemistry and Laboratory Medicine (crosmbiol)
- CryptoDB: Cryptosporidium Genome Resources (CryptoDB)
- CSIRO (CSIRO)
- CTD: Comparative Toxicogenomics Database (comtoxdb)
- CyanoDB (CyanoDB)
- Danish Medical Association (dadl)
- Dartmouth Journal Services (djs)
- Data Conversion Labs (dclab)
- Data Trace Publishing Company (DATATRACE)
- DataMed.org (DataMed)
- DDS on behalf of Universitas Carolina (ddsczech)
- Dennis Barber Ltd. (debarber)
- Departamento de Salud - Gobierno de Navarra (Navarra)
- Department of Veterans Affairs, Rehabilitation Research & Development Service (VARD)
- Deutsches Aerzteblatt International (dearzte)
- diArk - a resource for eukaryotic genome research (diArk)
- Digital CSIC Spanish National Research Council (DigitalCSIC)
- Digital Morphology (DigiMorph)
- Digital Repository of the University of Navarra (dadun)
- Diposit Digital de la Universitat de Barcelona (ddubarcelona)
- Discovery Medicine (dismed)
- The DNA Replication Origin Database (OriDB)
- Domain Mapping of Disease Mutations (DMDM)
- Domus Medica (icemj)
- Dove Medical Press (dovepr)
- The Down Syndrome Educational Trust (downsed)
- Dryad Digital Repository (dryaddb)
- Dustri-Verlag Dr. Karl Feistle GmbH & Co. KG (dustri)
- EAWAG Biocatalysis/Biodegradation Database (umbbd)
- EB Medicine (EBMed)
- Ediciones Doyma, S.L. (Doyma)
- Edinburgh Research Explorer, University of Edinburgh (ediexplorer)
- Editora Scientific (edscientific)
- Editorial Board of Chinese Journal of Traumatology (English Edition) (chijtr)
- Editorial Office of Chinese Journal of Lung Cancer (cjlc)
- Editorial Office of Sheng Wu Gong Cheng Xue Bao (cjbt)
- Editorial Office of Zoological Research (zoorescn)
- Editura Celsius (celsius)
- EDP Sciences (edpsci)
- EDRA LSWR SpA (edralswr)
- Egyptian Public Health Association (egpha)
- eLife Sciences Publications, Ltd (elifesci)
- Elsevier Science (ES)
- Emerald Group Publishing Limited (emerald)
- Emergency Medicine department, University of California Irvine (ucirvine)
- Encyclopedia of life (encylife)
- Endotext (endotext)
- Ensembl (ensem)
- Ergon (ergon)
- Erudit (erudit)
- eScholarship, California Digital Library, University of California (eScholarship)
- Esmon Publicidad (Esmon)
- Eukaryotic Promoter Database (EPD)
- Europa Digital & Publishing (europa)
- Europe PubMed Central (UKPMC)
- European Cells and Materials Ltd (ECMh)
- European Centre for Disease Prevention and Control (ECDC) (ecdc)
- European Observatory on Health Systems and Policies (eurobs)
- European Review for Medical and Pharmacological Sciences (verduci)
- Evolutionary Trace of Functional Site (lichtarge)
- ExactAntigen/Labome (EADB)
- F1000 Research Ltd (f1000r)
- Fayixue Zazhi (fyxzz)
- Federacion Colombiana de Obstetricia y Ginecologia (Fecolsog)
- Federal Register (fedreg)
- figshare - Data (figshare)
- FIU Digital Commons (FIUdigital)
- FlyBase (FlyBase)
- Forum for Medical Ethics Society (fmes)
- Frontiers Media SA (frontfoun)
- Frontline Medical Communications Inc (fmc)
- Fundacao de Pesquisas Cientificas de Ribeirao Preto (USPGMR)
- Fundacion Revista Medicina (Buenos Aires) (furevmed)
- Future Science (futuresci)
- Galenos Yayinevi (galenosyay)
- GEISHA - In Situ Hybridization Database (geishap)
- GenAge Database of Aging Related Genes (genage)
- Gene Ontology (GeneOntol)
- The Gene Wiki (genewik)
- GeneCopoeia Inc. (genecopoeia)
- GeneMANIA (GeneMANIA)
- GeneTex Inc (genetex)
- Genetic Alliance (GA)
- Geneve: Medecine et hygiene (revmedch)
- Genomes On Line Database (GOLD)
- GenScript latest version of gene cDNA ORF Clone (genscript)
- Georg Thieme Verlag Stuttgart, New York (Thieme)
- German Medical Science GMS Publishing House (gmspubh)
- Gesellschaft Schweizer Tieraerztinnen und Tieraerzte (gstut)
- Global Biotic Interactions (GloBI)
- Global Catalogue of Microorganisms (GCM)
- GlyGen glycoinformatics resource (GlyGen)
- GN1 Sistemas e Publicacoes, LTDA (gennet)
- Goettingen Research Online-Universitat Gottingen (goescholar)
- Gramene (Gramene)
- Graphimedic, S.A. de C.V. (graphimedic)
- Grupo Saned (saned)
- De Gruyter (degruyter)
- Guhmok Publishing Co. (guhmokpub)
- Guide to Pharmacology (guidpharm)
- H1 Connect (fopinions)
- HAL archives ouvertes (HALarchives)
- Hamadan University of Medical Sciences, School of Public Health (humssph)
- Health and Medical Publishing Group (capemedia)
- HEC Press, Healthy Eating Club PTY LTD (hecpr)
- The Hellenic Cardiological Society (HCS)
- Hellenic Psychiatric Association (hellenpsych)
- Henry Ford Health System (hfordsystem)
- Herbario Amazonico Colombiano, Instituto Amazonico de Investigaciones Cientificas Sinchi (COAHSinchi)
- Herbarium, Real Jardin Botanico-CSIC. Madrid (MAFungi)
- HighWire (HighWire)
- Hindawi Limited (Hindawi)
- HMP Communications, LLC (HMP)
- Hokkaido University Collection of Scholarly and Academic Papers: HUSCAP (huscap)
- Hong Kong Academy of Medicine Press (HKAMP)
- Hormones (helsoc)
- Human eFP Browser (humanefp)
- Human Gene Mutation Database (HGMD)
- Hungarian Oncological Association (MOT)
- IAS-USA (iasusa)
- IAVI Report (iavi)
- ID Design Press (idesignpr)
- IEEE Computer Society (IEEETRAN)
- IEEE Engineering in Medicine and Biology Society (embs)
- IGAKU-SHOIN Ltd. (IgakuShoin)
- Il Pensiero Scientifico Editore (pensierosci)
- Imago Specimen Image Download (imagospe)
- IMEx Consortium (imex)
- IMGT, the international ImMunoGeneTics information system (IMGT)
- ImmPort - Shared Data - Datasets (immportdb)
- Immune Epitope Database and Analysis Resource (iedb)
- Impact Journals, LLC (ImpactJournals)
- IMR Press (imrpress)
- Index Fungorum (Fungorum)
- Index Nominum Algarum (INA)
- IndexCopernicus (IndexCopernicus)
- Indian Academy of Sciences (IAS)
- Indian Pediatrics (indian)
- Indiana University Herbarium (IUHerbarium)
- Indiana University Imago Repository (IUImago)
- Indonesian Society of Internal Medicine (ijim)
- Inferenze scarl (inferenze)
- InfezMed (libero)
- Inforang (inforang)
- Ingenta plc (Ingenta)
- Ingenuity Pathways Analysis (Ingenuity)
- InnateDB (IDB)
- InnoVision Professional Media (innovis)
- Institute for Transcriptional Informatics (IFTI)
- Institute of Molecular Physiology and Genetics, Slovak Academy of Sciences (imolpgs)
- Institute of Parasitology, Biology Centrum the Academy of Sciences of the Czech Republic (instparczech)
- Institute of Pharmacology Polish Academy of Sciences (IPhPAS)
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague (ASCR)
- Institute of Rural Health (AAEM)
- Institutional Repository of University of Modena and Reggio Emilia (IRIS UNIMORE) (irisunimore)
- Instituto Mexicano del Seguro Social (cirycir)
- Integrated Microbial Genomes (img)
- Integrated Taxonomic Information System (ITIS)
- Inter-Research Science Center (intres)
- InterMine (InterMine)
- International Agency for Research on Cancer - Screening Group (IARCSCR)
- International Brazilian J Urol (IntBrazJUrol)
- International Center of Mental Health Policy and Economics (ICMPE)
- International Committee on Taxonomy of Viruses (ICTV)
- International Foundation Juan Jose Lopez Ibor (ifjlopez)
- The International Journal of Developmental Biology (IntJDevBiol)
- International journal of medical education (ijme)
- International Journal of Pharmaceutical Compounding (IJPC)
- The International Plant Names Index (IPNI)
- International Rehabilitation Council for Torture Victims (irct)
- International Rhinologic Society (rhinologic)
- International Scientific Literature, Ltd. (ISL)
- International Society of Exercise and Immunology (exerimm)
- International Society of Global Health (jglobalhealth)
- International Society of Musculoskeletal and Neuronal Interactions (jmni)
- International Union of Crystallography (IUCr)
- InterologFinder.org (interologfinder)
- Interologous Interaction Database (I2D)
- IOP Publishing Ltd. (IOP)
- IOS Press (Iosp)
- iPhylo (iPhylo)
- Iranian Society of Immunology and Allergy and Shiraz Institute for Cancer (isiasicr)
- Iranian Society of Nephrology (iransn)
- IRCA-BSSA Group (ircabssa)
- IRCA-BSSA Group (iadcmedhr)
- iRefWeb - iRefIndex release 9.0 - Consolidated Interactome (cairefweb)
- Israel Medical Association (isrameda)
- Israel psychiatry association (IPA)
- Istanbul University Press (tristanunip)
- Istituto Italiano di Antropologia (iitalant)
- Istituto Superiore di Sanita (ISDIS)
- Istituto zooprofilattico sperimentale dell Abruzzo e del Molise G. Caporale (vetitalia)
- Italian Society for Medical, Odontoiatric, and Clinical Microbiology (simmoc)
- Iuliu Hatieganu Medical Publishing House (Rosogast)
- IUPUI ScholarWorks (ScholarWorks)
- Ivyspring International Publisher (ismedsci)
- J-STAGE, Japan Science and Technology Information Aggregator, Electronic (JSTAGE)
- Jackson Laboratory JAX®Mice Database (JAXMice)
- JCU, James Cook University (JCU)
- JMIR Publications (Heidelbg)
- John Libbey Eurotext (JLE)
- JOP. Journal of the Pancreas (Online) (JOP)
- Joseph Hughes (sp_jhughes)
- Journal House of Qingdao University (qingdao)
- Journal of Biomedical Research (JBR)
- journal of forensic odontostomatology (jforodon)
- The Journal of Infection in Developing Countries (jinfdevc)
- Journal of Peking University (Health Sciences) (pekuni)
- Journal of Special Operations Medicine (JSOM)
- JRNLclub (jrnlclub)
- Just Medical Media Limited (ukjustmed)
- K-State Research Exchange (krex)
- K.K. DNAFORM (dnaform)
- Kare Publishing (KBBID)
- Kazusa DNA Research Institute (Kazusa)
- Kermanshah University of Medical Sciences (kerums)
- Kobe Journal of Medical Sciences Publisher (Kobe)
- Korea Disease Control and Prevention Agency (kdcpa)
- KoreaMed (koreamed)
- The Korean Academy of Asthma, Allergy and Clinical Immunology; The Korean Academy of Pediatric Allergy and Respiratory Disease (kacipard)
- The Korean Academy of Conservative Dentistry (koacondent)
- Korean Academy of Medical Sciences (KAMS)
- Korean Academy of Oral and Maxillofacial Radiology (koramxrad)
- Korean Academy of Periodontology (koacadpe)
- The Korean Academy of Prosthodontics (koacpros)
- The Korean Academy of Tuberculosis and Respiratory Diseases (koatubresd)
- Korean Association for Laboratory Animal Science (kolabans)
- Korean Association of Immunologists (koaimmuno)
- Korean Association of Oral and Maxillofacial Surgeons (koramaxsu)
- The Korean Brain Tumor Society; The Korean Society for Neuro-Oncology (kobraitso)
- Korean Breast Cancer Society (kobrecas)
- Korean College of Neuropsychopharmacology (koconeuropsy)
- Korean Dementia Association (kodemeassoc)
- The Korean Dental Society of Anesthesiology (kodesocan)
- Korean Dermatological Association (koderasoc)
- Korean Diabetes Association (kordiabes)
- The Korean Gastric Cancer Association (kogascan)
- Korean Hip Society (kohipsoc)
- Korean Neurological Association (koneura)
- Korean Neurotraumatology Society (koneutrasoc)
- The Korean Nutrition Society; The Korean Society of Community Nutrition (NRP)
- The Korean Orthopaedic Association (korthas)
- The Korean Physiological Society and The Korean Society of Pharmacology (kophypha)
- The Korean Radiological Society (Korrad)
- Korean Society for Biochemistry and Molecular Biology (chosunu)
- The Korean Society for Bone and Mineral Research (kosbomire)
- The Korean Society for Brain and Neural Science (kobraineu)
- Korean Society for Metabolic and Bariatric Surgery (kometbarsurg)
- The Korean Society for Microbiology and Biotechnology. (ksmbt)
- Korean Society for Neurorehabilitation (kosoneuroreh)
- The Korean Society for Reproductive Medicine (kosreprom)
- Korean Society for Sexual Medicine and Andrology (kossmeda)
- The Korean Society for the History of Medicine (korshmed)
- The Korean Society of Cardiology (kosocardy)
- Korean Society of Cerebrovascular Surgeons; Society of Korean Endovascular Neurosurgeons (kocerebsur)
- Korean Society of Clinical Nutrition (kosoclinut)
- The Korean Society of Echocardiography (kosechoc)
- Korean Society of Exercise Rehabilitation (kosoexreh)
- The Korean Society of Gastroenterology (KSG)
- Korean Society of Heart Failure (kosoheartfail)
- Korean Society of Hematology (kosochem)
- Korean Society of Infectious Diseases; Korean Society for Chemotherapy (kosocinfdi)
- Korean Society of Lipid and Atherosclerosis (krsoclipath)
- Korean Society of Medical Informatics (komedinfo)
- Korean Society of Menopause (kosmenop)
- Korean Society of Nursing Science (KSTC)
- Korean Society of Obstetrics and Gynecology (kosobsgy)
- Korean Society of Otorhinolaryngology-Head and Neck Surgery (kotorhino)
- The Korean Society of Pediatric Gastroenterology, Hepatology and Nutrition (kospeghnu)
- Korean Society of Radiology (korsocrad)
- The Korean Society of Veterinary Science (Koreavet)
- The Korean Surgical Society (kosurgsoc)
- Korean Urological Association (koruroas)
- The Korean Vaccine Society (kovacsoc)
- Kowsar (kowsar)
- KU Biodiversity Institute (kubioinst)
- Kyoto Encyclopedia of Genes and Genomes (KEGG)
- Kyoto University Research Information Repository - Articles (kurenai2)
- Kyoto University Research Information Repository - Kiyo (kurenai)
- Kyushu University Institutional Repository (kyushuQIR)
- LANL HCV Databases (lanlhcv)
- LANL Hemorrhagic Fever Virus sequence database (hfvweb)
- LANL HIV Databases (HIVWeb)
- The Lens - Patent Citations (lens)
- Life Sciences Society (IEEECS)
- Lifemap (lifemap)
- Linkoping University Electronic Press (linkoping)
- List of Bacterial names with Standing in Nomenclature (LBSN)
- Literatura Medica (litmed)
- Lithuanian University of Health Sciences (kaunas)
- London School of Hygiene and Tropical Medicine (LSHTM)
- Longwoods Publishing (Longwood)
- LookUs Bilisim (LookUs)
- LSDB from Gene (LSDB)
- M2PI (m2pi)
- Malaysian Medical Association (malaymeda)
- Malaysian Society of Parasitology and Tropical Medicine (msptm)
- Mammal Species of the World (MSW)
- Mammals of Texas (MamTex)
- Masson (France) (MassonFr)
- Mattioli 1885, Spa (Mattioli)
- MDPI (MDPI)
- MedEdPORTAL (mededportal)
- Media Sphera Publishing Group (msphera)
- Medical Association of Zenica-Doboj Canton, Bosnia and Herzegovina (medglas)
- Medical Journals Sweden (SPADV)
- Medical Letter on Drugs and Therapeutics (MedLett)
- Medical Online, Meteo Inc (meteoinc)
- Medical Tribune Inc. (MT)
- MEDICC (medicc)
- Medicina Oral S.L. (Medoral)
- Medicinska naklada d.o.o. (mednak)
- Medknow Publications and Media Pvt Ltd (Medknow)
- MedlinePlus Consumer Health Information (medlineplus2)
- MedlinePlus Health Information (MEDPLUS)
- MEDPRESS (medpress)
- Medscape, Inc. (Medscape)
- MedWorks Media Inc. (medworks)
- Medycyna Praktyczna (MedPrakt)
- Microbiological Society of Korea (mskor)
- MilliporeSigma (milliporesigma)
- Minerva Medica (Minerva)
- MLibrary (Deep Blue) (DeepBlue)
- MODBASE, Database of Comparative Protein Structure Models (Sali Lab/UCSF) (modbase)
- ModelDB (modeldb)
- Molecular Vision (MolVis)
- Molekuliarnaia biologiia (molbiolmosk)
- Monarch Initiative (Monarch)
- Monkey Alcohol and Tissue Research Resource (matrr)
- MORION LLC (MORION)
- MorphBank (MorphBank)
- Mouse Genome Informatics (MGI) (MGI)
- Mouse Phenome Database (MPD) (mouphenod)
- MRE Press (mrepress)
- Multimedia Manual for Cardio-Thoracic Surgery (eacts)
- MycoBank (MycoBank)
- Mycology Collections Portal (MyCoPortal)
- MyJove Corporation (myjove)
- National Academies Press (NAS)
- National BioResource Project (jpnbioresp)
- National Center for Health Statistics (nchs)
- National Fish Collection, Smithsonian Institution (usnmfish)
- National Institute for Health and Care Research Journals Library (NIHR)
- National Institute of Infectious Diseases (jniid)
- National Institute of Malaria Research(Indian Council of Medical Research) (indnimr)
- National Institute of Public Health - National Institute of Hygiene (NIPH-NIH), Poland (nizppzh)
- National Institute of Public Health, Czech Republic (cejph)
- National Institute on Alcohol Abuse and Alcoholism (niaaa)
- National Plant Photographic Index (NPPI)
- National Toxicology Program (NTP)
- Nature Publishing Group (NPG)
- NCBI Bookshelf (Books)
- NCBI taxonomy bookmarks (taxresource)
- NCI caNanoLab Data Portal (ncicananolab)
- NCI CPTAC Assay Portal (assaysnci)
- NCI CPTC Antibody Characterization Program (antibodynci)
- Nencki Institute of Experimental Biology (nencki)
- Neuropsychopharmacologia Hungarica (huaspsy)
- New Crops Resource Online Program (NewCROP)
- NHGRI Bioinformatics and Scientific Programming Core (nhgribspc)
- NHGRI genome proposal white papers (nhgriwp)
- NIH Consens State Sci Statements (nihcdp)
- NIH Guide Grants Contracts (nihggc)
- NIMH Data Archive (NDA)
- NINDS Human Cell and Data Repository (nhcdr)
- NITE Biological Resource Center (NBRC)
- NMNH Collections, Smithsonian (sinmnhinfo)
- Nofer Institute of Occupational Medicine (noferiom)
- Nomenclature of Eumycetozoa (eumycetozoa)
- Norwegian Medical Association (nma)
- Novus Biologicals (novbiol)
- OAKTrust Digital Repository, Texas A&M (oaktrust)
- Ocean Biogeographic Information System (OBIS)
- Office of Health Protection, Australian Government Department of Health (audha)
- Okayama University Medical School (Okayama)
- Okayama University Scientific Achievement Repository (OUSAR)
- OMA Browser: Orthologous MAtrix (OMA)
- Oncology Nursing Society (oncnurs)
- OncoMX cancer biomarker resource (oncomx)
- Optica Publishing Group (OSAPUB)
- ORBi (University of Liege) (ORBi)
- Ordem dos Medicos/Portuguese Medical Association (cohresp)
- OriGene (OriGene)
- OrthoDB catalog of orthologs (orthodb)
- Ovid Technologies, Inc. (Ovid)
- P.Ziti and Co (pzico)
- Pacific Sympsium On Biocomputing (PSB)
- Pacini Editore (pacinied)
- Pagepress Publications (pagepress)
- Pain Physician (PAINMD)
- Pakistan Medical Association (pakmed)
- Palacky University Olomouc (paluni)
- Pan African Medical Journal (afiepin)
- PANTHER Classification System (PANTHER)
- The Parasitic Plant Connection (PPlants)
- Pasteur Institute of Iran (pinsir)
- Patient-Centered Outcomes Research Institute (pcoriorg)
- Pavia (pavia)
- PeerJ, Inc. (peerjinc)
- Permanyer Publications (perpub)
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