Figure 2From: The Adult Mouse Anatomical Dictionary: a tool for annotating and integrating dataExample showing multiple hierarchical representations for a given anatomical term. The heart is represented both as (a) an organ in the thoracic cavity, and (b) as a part of the cardiovascular organ system. (c) Detail page for the term heart showing immediate substructures. Note that both spatial and functional representations contain is-a and part-of relationships.Back to article page