The service, Integrating Network Objects with Hierarchies (INOH), provides access to a database of pathways among bio-molecules in several organisms, including humans, mice, and rats. The pathways recorded by the service define molecular connections that allow signal transduction in an organism. This information is documented largely in published articles, so the database is built by extracting knowledge from text to develop a machine-processable repository.
API methods support retrieval of graphs defining nodes and arcs (or edges) connecting them, based on selected criteria. Results delivered include the nodes involved in a particular pathway and the connections between them, distinguished by event type, including controlled events, controlling events, and others.