automatically generated and dynamical. For example, interactions can be removed from the graph, or new ones can be added by expanding a specific physical entity. Details about nodes, like alternative names and external identifiers, are shown in tool-tips. Physical entities can be easily located in large graphs by searching them by name. Network graphs can be exported as image or as a computer-readable file (currently, in BioPAX level 2 format). In the latter case, networks extracted from ConsensusPathDB can be used as input to various software programs for further analysis, e.g. for modeling and simulation studies.