Figure 2From: Semantic integration of gene expression analysis tools and data sources using software connectorsGene expression process. A named rectangle represents a concept. A white rectangle represents a concept introduced in our ontology, while a gray rectangle represents a concept reused from another ontology. A solid line with a stick arrowhead at its end represents a relationship between two concepts. A solid line with a hollow diamond at its end represents a part of relationship. Finally, a solid line with a hollow triangle as an arrowhead represents an is a relationship.Back to article page