Figure 2

Claudin 1 gene expression in gastric tumors vs matched control mucosa. The solid line represents relative ratio of CLDN1 expression in the tumor tissue compared to matched control gastric mucosa, as the log₂ fold change (log₂ tumor/control expression levels). A positive score indicates a higher expression in the tumor compared to the normal gastric mucosa. The grey background represents the expression of approximately 37 800 other genes.