Figure 1.

A screenshot of the cell ontology, as seen within the OBO-Edit program, displaying all the information associated with the term hepatocyte. The left-hand panel shows all the top-level terms, together with the location of hepatocyte within the cell_by_histology classification. The right-hand panel shows all the hierarchies within which hepatocyte can be found. The top part of the central panel illustrates how the term is found, while the lower part gives the definition, the unique Cell Ontology ID and the MESH ID.