Figure 3.

The effect of anti-GR1 treatment on the response of SCCVII tumors to PDT vaccine. Two days after peritumoral administration of PDT vaccine (prepared as described for Figure 2), the mice were injected with anti-GR1 (0.1 mg/mouse i.v.) or control saline. Control groups include mice treated with anti-GR1 alone. The response to therapy was evaluated by tumor size measurement and is presented as percentages of mice with tumors smaller than 300 mm³ in function of time after vaccination. Each treatment group consisted of 6 mice. Statistically significant (p < 0.05) were the differences between the control untreated group response and all the three treated group responses.