Dear all, we are pleased to announce the release of the Cell Cycle Ontology (http://www.cellcycleontology.org) version 0.9.8. For this release, up-to-date data from the main sources (GOA, GO, UniProt, and from orthoMCL execution) has been integrated. 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 Moreover, CCO can also be explored from the BioPortal (http://www.bioontology.org/ncbo/faces/pages/ontology_list.xhtml) as well as from the Ontology Lookup Service (http://www.ebi.ac.uk/ontology-lookup/). For further information please refer to http://www.cellcycleontology.org or contact cco@psb.ugent.be Regards, The CCO team