Professor Vincenzo Cerundolo tells us how research in immunology leads to the development of new cancer treatments. Immunotherapy stimulates the body's immune system, and can be a powerful treatment for cancer. The most efficient prophylactic cancer vaccine today is the vaccine against papilloma virus, whereas the development of therapeutic vaccines is more challenging. With the aim of developing better treatment strategies for cancer patients, Professor Vincenzo Cerundolo is working to gain a better understanding of the cell-to-cell interplay required for optimal expansion and activation of tumour-specific T cell populations. Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/