Watch this video to learn about how cancer cells grow and spread, and how they can be targeted by certain treatments. https://www.cancer.gov/about-cancer/understanding/what-is-cancer | National Cancer Institute

What is cancer? Cancer is a term used for diseases in which abnormal cells divide without control and are able to invade other tissues. Cancer is not just one disease but many diseases, and there are more than 100 different types of cancer. More in: http://1.usa.gov/17rsTsD | National Cancer Institute