- The BRENDA Tissue Ontology (BTO) CC-BY-4.0
The BRENDA Tissue Ontology (BTO) project; original artifact license CC-BY-4.0 (https://creativecommons.org/licenses/by/4.0/); https://obofoundry.org/ontology/bto.html
http://purl.obolibrary.org/obo/BTO_0000021 ; https://purl.obolibrary.org/obo/bto.owl ; snapshot SHA-256 f89ff8a04b57ffee51cf07b05c70b39b3a6b2026940d5bda851e943a4b1a0f4b ; exact artifact license https://creativecommons.org/licenses/by/4.0/ ; retrieved 2026-11-07