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Welcome to BioPortal,
the world's most comprehensive repository of biomedical ontologies
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Unified Medical Language System
OBO Foundry
WHO Family of International Classifications
Clinical and Translational Science Awards
Cancer Biomedical Informatics Grid
Bibliographic Materials Group
Proteomics Standards Initiative
Biodiversity Information Standards
Consultative Group on International Agricultural Research
Ontology Visits (August 2022)
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BioPortal Statistics
Ontologies
1,017
Classes
14,721,671
Properties
36,286
Mappings
79,636,946