Figure 7.

 Histological and immunohistochemical examination of non‐small cell lung cancer (NSCLC) tissues. (a) Tumor tissues were excised from severe combined immunodeficiency (SCID) mice, fixed in 4% buffered paraformaldehyde and embedded in paraffin. Representative photomicrographs show a typical immunochemical appearance in OBA‐LK1 tumor tissues from PBS treatment and systemic interleukin (IL)‐29 treatment group. (b) Proliferation and angiogenesis were detected using anti‐Ki‐67 Ab and anti‐Factor VIII‐related antigen Ab, respectively. Graphs show the change in Ki‐67‐positive cells and blood vessel number of the tumor tissues. Data represent the mean ± SD (n = 5) (*P < 0.05; **P < 0.007 vs PBS). HPF, high‐powered field.