This map contains the graph of the most connected orphan diseases. The colour of a node corresponds to its connected component. Two diseases are connected if they appear in at least once in the same document.
This map is displayed with the Microsoft® Live Labs™ Web application Seadragon, and the layout of the graph has been done with the graph visualization software Gephi. It is possible to drag and drop the previous map with the mouse click, and to zoom in and out with the mouse wheel or the + and - buttons on the bottom-right of the map.
Also, here is the map of the connected components with GexfExplorer. It is possible to click on a component to explore it.