Logo for Cell Ontology The Cell Ontology is designed as a structured controlled vocabulary for cell types. The ontology was constructed for use by the model organism and other bioinformatics databases, incorporating cell types from prokaryotes to mammals, and includes plants and fungi.

Preferred Prefix
anatomy annotation cell cell biology life science morphology obo ontology
Homepage Repository OBO OWL
Alexander Diehl   0000-0001-9990-8331   addiehl
Pattern for Local Unique Identifiers

Local identifiers in Cell Ontology should match this regular expression:

Example Local Unique Identifier
0000062   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Cell Ontology should match this regular expression:

Example CURIE
MIRIAM Namespace Embedded in LUI
The legacy MIRIAM standard for generating CURIEs with this resource annotates the namespaceEmbeddedInLUI as true. This means that you may see local unique identifiers that include a redundant prefix and delimiter (also known as a banana) and therefore look like a CURIE. For Cell Ontology, the banana looks like CL:. Therefore, you may see local unique identifiers for this resource that look like CL:0000062 (instead of the canonical form 0000062) and CURIEs for this resource that look like CL:CL:0000062 (instead of the canonical form CL:0000062). The Bioregistry will automatically strip off the banana when standardizing local unique identifiers and CURIEs.
Metaregistry Cell Ontology

The metaregistry provides mappings between the Bioregistry and other registries. There are 14 mappings to external registries for this resource with 3 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
AberOWL AberOWL logo aberowl CL
AgroPortal AgroPortal logo agroportal CL
BioContext biocontext CL
BioPortal BioPortal Prefixes logo bioportal CL
Cellosaurus Cellosaurus Registry logo cellosaurus CL
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.j9y503
GO Gene Ontology Registry logo go CL
Identifiers.org Identifiers.org logo miriam cl
N2T Name-to-Thing logo n2t cl
OBO Foundry OBO Foundry logo obofoundry cl
OLS Ontology Lookup Service logo ols cl
OntoBee OntoBee logo ontobee CL
Prefix Commons Prefix Commons logo prefixcommons cl
Wikidata Wikidata Property logo wikidata P7963
RDF Information

When using this resource in RDF, the following URI format should be used:



A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier 0000062 is used to demonstrate the providers available for Cell Ontology. A guide for curating additional providers can be found here.

Name Metaprefix URI
Cell Ontology cl http://purl.obolibrary.org/obo/CL_0000062
Cell Ontology (RDF) rdf http://purl.obolibrary.org/obo/CL_0000062
Bioregistry bioregistry https://bioregistry.io/cl:0000062
Identifiers.org miriam https://identifiers.org/CL:0000062
OBO Foundry obofoundry http://purl.obolibrary.org/obo/CL_0000062
Ontology Lookup Service ols https://www.ebi.ac.uk/ols4/ontologies/cl/terms?iri=http://purl.obolibrary.org/obo/CL_0000062
Name-to-Thing n2t https://n2t.net/cl:0000062
BioPortal Prefixes bioportal https://bioportal.bioontology.org/ontologies/CL/?p=classes&conceptid=http://purl.obolibrary.org/obo/CL_0000062
Extra Providers

Additional providers curated in the Bioregistry are listed here. These are typically inherited from Identifiers.org or Prefix Commons, and need extra curation.

Code Name URL
bio2rdf Bio2RDF http://bio2rdf.org/cl:0000062
cellguide Cell Guide https://cellxgene.cziscience.com/cellguide/CL_0000062
cellxgene CELLxGENE https://onto.cellxgene-labs.prod.si.czi.technology/a/ontology/CL/CL:0000062