Fig. 5. Western blot analysis of p-JNK expression in samples exposed to the MF for 20 minutes in the presence or absence of erlotinib. β-Actin was used as charge control. Values are normalized over controls. (A) p-JNK expression: bars are means ± SEM of 7 experimental replicates, with 3 samples per experimental condition (control, MF only, erlotinib only, MF+erlotinib) and replicate. **: 0.001 ≤ p <0.01; ***: p<0.001 (Student's t-test). (B) Representative blots.