Figure 1From: OpenDMAP: An open source, ontology-driven concept analysis engine, with applications to capturing knowledge regarding protein transport, protein interactions and cell-type-specific gene expressionOpenDMAP coverage of MEDLINE. The gray bars indicate the number of journals indexed by MEDLINE each year. The red bars indicate the number of journal abstracts from which OpenDMAP extracted at least one assertion regarding transport, interaction or expression. In recent years, more than 40% of biomedical journals contain such information. 2007 is partial data (through July 1).Back to article page