Figure 4

Organization of the MPHASYS ontology. The ontology is used to describe pathological findings for clinical observations, gross- and micro-pathology. Clinical observations represent findings made over the life-span of an animal; sample dispositions are a class of terms used to describe why observations can not be made. Pathological findings are tripartite in form, with classes of terms for describing the topography (physical location), morphology (the finding) and qualifiers (morphology specific scores; e.g. duration, number and severity).