Hunting for clues: Regulatory T cells and colorectal cancer.

Colorectal cancer is a common disease which appears to be influenced by anti-tumor immune responses. Here we discuss our recent study(1) which tracked anti-tumor CD4(+) T cell responses before and after surgical resection, highlighting the importance of regulatory T cells (T(regs)) in controlling these responses, and the influence of the tumor on these specific T‑cell populations.