A<unk>  is a vaccine that either treats existing<unk>  or prevents development of<unk> s that treat existing<unk>  are known as therapeutic<unk> s. Some of the vaccines are "autologous", being prepared from samples taken from the patient, and are specific to that patient. Some researchers claim that<unk> ous cells routinely arise and are destroyed by the immune system (immunosurveillance); and that tumors form when the immune system fails to destroy them. Some types of<unk> , such as cervical<unk>  and liver<unk> , are caused by viruses (oncoviruses). Traditional vaccines against those viruses, such as the HPV vaccine and the hepatitis B vaccine, prevent those types of<unk> . Other<unk> s are to some extent caused by bacterial infections (e.g. stomach<unk>  and Helicobacter pylori). Traditional vaccines against<unk> -causing bacteria (oncobacteria) are not further discussed in this article.
Cancer vaccine
Edible vaccines
Tuberculosis vaccines
Vaccine
Therapeutic vaccines
Animal vaccination
Tumor antigen vaccine
Vaccine ingredients