IL9 and neoplasm: B6 mice were s.c. inoculated with 1.0 × 106 Lewis lung cancer (LLC) cells into their right flanks and primary tumors were intratumorally (i.t.)injected with PBS, vvDD, or vvDD-IL-9 when the tumor volumes were 50–60 mm3, typically about 9 days after tumor cell injection.