Prophylactic vaccines have been adopted to prevent certain cancers caused by viruses and other pathogens, and researchers are also working to harness the body's immune system in an effort to use vaccines to treat cancer. The idea is to get the body's immune cells to identify and attack cancer cells. Researchers are working on vaccine treatments for pancreatic cancer and brain cancer. Meanwhile, cancers such as stomach cancer are considered candidates for additional prophylactic vaccines.
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