Dear all, we are pleased to announce the release of the Cell Cycle Ontology (http://www.cellcycleontology.org) version 0.9.5. Among the improvements of this release, orthology data across the four model organisms (A thaliana, S pombe, S cerevisiae, H sapiens) has been added. As usually, please refer to the application ontologies directly via the web site: http://www.cellcycleontology.org/ontology/cco_A_thaliana.obo http://www.cellcycleontology.org/ontology/cco_S_cerevisiae.obo http://www.cellcycleontology.org/ontology/cco_S_pombe.obo http://www.cellcycleontology.org/ontology/cco_H_sapiens.obo and/or the entire ontology: http://www.cellcycleontology.org/ontology/cco.obo For further information please refer to http://www.cellcycleontology.org or contact cco@psb.ugent.be Regards, The CCO team