March 2, 2010: We are currently experiencing periods of instability in BioPortal. We are working to resolve the issue. We apologize for the inconvenience and thank you for your patience. [close]
NCBO is building a system for automated ontology-based annotation and indexing of biomedical data. We process the textual metadata of diverse elements of biomedical resources such as gene expression data sets, descriptions of radiology images, clinical-trial reports, and PubMed abstracts to annotate and index them with terms from appropriate ontologies. Use the interface below to search the resulting index of annotations and to identify biomedical data resources annotated with particular ontology terms. Try searching for "Melanoma" and use NCI Thesaurus as your ontology.