- Sequence types and features ontology CC-BY-4.0
Sequence types and features ontology project contributors; CC-BY-4.0; https://raw.githubusercontent.com/The-Sequence-Ontology/SO-Ontologies/4340c143bac3578bba0c013d02e8c5f0e51ad14a/LICENSE; https://obofoundry.org/ontology/so.html
http://purl.obolibrary.org/obo/SO_0002257 ; https://purl.obolibrary.org/obo/so.owl ; snapshot SHA-256 28d19f7767d8848ceb9088658079ede9b467f4ee95205220520229a45582c6aa ; exact-byte upstream commit 4340c143bac3578bba0c013d02e8c5f0e51ad14a ; license https://raw.githubusercontent.com/The-Sequence-Ontology/SO-Ontologies/4340c143bac3578bba0c013d02e8c5f0e51ad14a/LICENSE ; license evidence checked 2026-11-08