Professor Andrew Sewell is a senior research director for Infection and Immunity at Cardiff University. He specialises in T-cell research, which places him at the forefront of cutting-edge new therapies for cancer and other auto-immune conditions.

In this episode, host Emma Yhnell hears from Andy about his journey into cancer research, how killer T-cells work in the body and why medical breakthroughs like vaccines are invaluable to humankind.

Drawing on his wealth of experience in the field of immunology, Andy highlights the importance of research today and touches on the possibility of developing a vaccine for cancer in the near future.