Figure 5

Histologic findings of tumors. A, Representative sections of tumors from UV-Tianjin-treated mice (a-c) or saline controls (d-f) (original magnification, ×400). CD4⁺ (a and d), CD8⁺ (b and e) or CD11c⁺ (c and f) cells were remarkably infiltrated into tumor tissues by UV-Tianjin. Tumor tissues were isolated at 48 h after UV-Tianjin or saline injection for three successive days. B, The percentage of CD4⁺, CD8⁺ and CD11c⁺ cells were shown as histogram bars. UV-Tianjin caused a significantly higher percentage of positive cells. ^*P < 0.01, vs. control. The data are representative of three independent experiments.