Figure 5. Immunoblotings (A) and histogram (B) showing the effects of neuregulin β1 (NRG β1) on focal adhesion kinase (FAK) phosphorylation in RSC96 cells seeding on poly-L-lysine (PLL) or laminin-coated plates.

The physical association of erbB-FAK signaling was analyzed by the ratio expressed as phosphorylated FAK (p-FAK) over total FAK. Note that NRG β1 extensively increases erbB-FAK activation in both PLL and laminin-coated plates with the most significant effect observed in the later group. *P<0.05 as compared to that of control value.