Another study found that IL-9 inhibits subcutaneous colon cancer and prolongs survival time in BALB/C mice by recruiting tumor infiltrating lymphocytes (such as tumor-specific CD8+ T cells and CD8+ granzyme B+ cells) to the tumor microenvironment, where they regulate T-cell function and kill tumor cells (156). The gene discussed is IL9; the disease is malignant colon neoplasm.