Combining chemotherapy with a drug that blocks part of the immune system from going into overdrive might help prevent cancer coming back in some people says a new study. Cancer-killing action of chemotherapy can trigger a swarm of wound-healing white blood cells to cluster around blood vessels in a treatment-hit tumour the researchers found. These cells repair tissue damage and build new blood vessels a process that sometimes helps the tumour to grow again after treatment. (Read: Coming soon A cheaper and effective way to detect cancer early) But by treating mice with cancer with a drug that stops these
