Figure 1.

E2F1 highly presented in SCLC. (A) Immunohistochemical staining of E2F1 (1:50 antibody dilution) in normal lung alveolar tissue, bronchial epithelia, adenocarcinoma, squamous carcinoma, large cell lung cancer, and small cell lung cancer, respectively (Scale bar = 50 μm). (B) Expressions of E2F1 in different lung cancer cell lines by Western blotting. The expression of glyceraldehydes 3-phosphate dehydrogenase (GAPDH) was used to determine loading differences between the different samples.