Figure 1

Oct-4 expression in tissues of well-differentiated adenocarcinoma (A), well-differentiated squamous cell carcinoma (B), poorly differentiated adenocarcinoma (C), and poorly differentiated squamous cell carcinoma (D), as well as VEGF staining (E) and MVD staining (F) were demonstrated immunohistologically. Quantification of Oct-4 expression (Oct-4 histoscore) with respect to differentiation status or tumor histology (G) and local advance or lymph nodes metastasis (H) is shown; 95% CIs are indicated.