The research charity stated cancer vaccines “are made to recognise proteins that are on particular cancer cells”.
“An antigen is a substance that triggers the immune system to respond against it,” the charity elaborated.
“For example, a virus has antigens on its surface which triggers the immune system to attack it. Body cells and cancer cells also have antigens on them.”
Cancer treatment vaccines aim to help the immune response recognise antigens on cancer cells, and to destroy them.