Scientists say they have found a way to prevent bowel cancer from growing. The removal of a cell “switch” in mice stopped growth of lesions in the bowel that can turn cancerous with time. The Vanderbilt University team hopes a drug that blocks this switch, which has been developed in France, could have the same effect in humans. The scientists told Cancer Cell journal they planned to test this drug in mice. Cancer Research UK said it was a long way from human therapy.