Figure 2

Enhanced immune activation in alum 5DPI-treated tumor-bearing mice.
Balb/c mice were inoculated s.c. with 105 H22 cells and randomly divided into two groups 5 days later. Mice were treated with Al(OH)3 as indicated. Peritoneal wash fluid and tumor interstitial fluid were collected 3 days after the 1st, 3rd and 6th alum injection. Levels of IL-1β, IL-6, TNF-α and IL-10 in peritonea (A) and tumor (B) were analyzed by ELISA. (C) Nude mice were inoculated with 105 H22 cells and treated with Al(OH)3 or PBS. Line graph depicting the tumor volume in H22 tumor-bearing nude mice receiving alum or control treatment. (D) Kaplan-Meier survival analysis of H22 tumor-bearing nude mice. Each value represents mean ± SEM. *p < 0.05, **p < 0.01. Unmarked comparisons are not statistically significant.