Source ontology files for the Gene Ontology

An ontology of cell types

OBO Organized Knowledge: Training materials for becoming an OBO engineer

Ontology for representing scientific evidence and provenance information

Integrated OBO ontology store

An experimental ontology containing key terms from Open Biological and Biomedical Ontologies (OBO)

OBO Metadata Ontology

Draft cell type definitions from data - candidates for inclusion in CL

Mapping of GAZ and ENVO to Wikidata

Top level monarch importer ontology

An experimental development version of the cell ontology