HealthSpray-on gel slows down the regrowth of tumours after cancer surgery A spray applied to the wound left by cancer surgery encourages the immune system to attack any cancer cells the surgeons left behind, a study in mice has found News
TechnologyRobot that's the width of a hair masters Pac-Man and cuts cheese Tiny metal robots can plot their own route around a maze modelled on the iconic video game – and could be used in surgery one day News