L5 (α5β1) did not modulate (p-)FAKand (p-)p-44/42(erk-1/2) in OV-MZ-6 cells, whileit unexpectedly increased (p-)p-44/42(erk-1/2) inM21 cells, possibly due to the presence of small amounts of this integrinin this cancer cell type (see Schemes S3 and S4 in the Supporting Information) (Figure 8). This evidence concerns the gene MAPK3 and cancer.