Ingenuity Pathway gene networks.

<p>The most highly significant gene networks identified in the Ingenuity Pathway analysis of the gene expression data in response to PM₁₀ are shown for small intestine at days 7(A) and 14(B) and colon at days 7(C) and (D). The networks are displayed graphically as nodes (genes/gene products) and edges (the biological relationships between the nodes). The intensity of the node color indicates the degree of up (red) or down (green) regulation in gene expression. Nodes are displayed using shapes that represent the functional class of the gene product. Edges are displayed as a direct interaction (solid line).