Figure 5

Western blots showing expression pattern of AP-1 family of proteins in HPV positive and HPV negative esophageal cancer. Protein extracts from HPV positive (C1) and HPV negative (C2) tumor biopsies as well as their corresponding adjacent tissue (N1, N2) were separated in 10% SDS-PAGE and detected by all specific antibodies of AP-1 family proteins as indicated. All the blots were stripped and reprobed for β-actin levels to confirm equal loading and the quantitation of bands was performed densitometrically as indicated in methods.