Subject: Public Domain Ontology for Cancer Researchers
Resource:  National Cancer Institute

For cancer medical researchers interested in working with Semantic Web technologies, the following paper may be of great interest. 

The National Cancer Institute’s Thésaurus and Ontology
Authors: Jennifer Golbeck, Gilberto Fragoso, Frank Hartel, Jim Hendler, Jim Oberthaler, Bijan Parsia

Research Centers: University of Maryland, College Park
National Cancer Institute, Center for Bioinformatics

The February, 2003 release of NCI Thésaurus contained about 26,000 concepts and about 71,000 terms divided among 24 taxonomies. The taxonomies cover administrative, applied and basic science and clinical terminology.

Reference:
Maryland Information and Network Dynamics Lab Semantic Web Agents Project (2008).  Retrieved April 21, 2008, from http://www.mindswap.org/papers/WebSemantics-NCI.pdf