With the improvement of people's living standards and changes in life and work, more and more people are suffering from cancer, such as lung cancer, skin cancer, and liver cancer. In response to this situation, in addition to treating cancer, we should also prevent the occurrence of cancer from the source, such as the use of vaccine. Vaccine refers to a preventive biological product used for human vaccination to prevent and control the occurrence and prevalence of infectious diseases. The biological product refers to a preparation for prevention, diagnosis and treatment prepared by using a microorganism or a toxin thereof, an enzyme, a serum, or a cell of a human or an animal. With the development of science and technology, people's understanding of cancer has deepened. Scientists believe that cancer vaccines can be developed to prevent and cure cancer. Cancer vaccines use the antigens of tumor cells to awaken the body's immune system to fight cancer. There are many types of cancer vaccines, and there are different cancer vaccines for different cancers, such as lung cancer vaccines, throat cancer vaccines, pancreatic cancer vaccines, etc.

Pancreatic cancer:

Pancreatic cancer is a malignant tumor of the digestive tract, which is highly malignant and difficult to diagnose and treat. About 90% of ductal adenocarcinomas occur in the ductal epithelium. The morbidity and mortality of ductal adenocarcinomas has increased significantly in recent years and its 5-year survival rate is