Chemotherapy may spread cancer and trigger more aggressive tumours, warn scientists Sarah Knapton, Science Editor https://www.telegraph.co.uk/science/2017/07/05/chemotherapy-may-spread-cancer-trigger-aggressive-tumours-warn/ 6 July 2017 • 7:54am   Chemotherapy could allow cancer to spread, and trigger more aggressive tumours, a new study suggests. Researchers in the US studied the impact of drugs on patients with breast cancer […]