Foundational Model Browser implemented in Java on the server side.
http://fme.biostr.washington.edu:8080/FME/index.html
Home screen. The left panel shows a subclass or part-of hierarcy. The right panel shows specifics for an entity selected on the left.
Organ. The user has opened the hierarchy on the left to reach Organ.
Lung. Deeper into the subclass hierarchy.
Lung parts. The left hierarchy has been switched to parts.