I came here wondering, "what? a "vaccine" for cancer?" and read the article. Am I right to interpret it as: "we gather cancer cells from a specific patient, assemble a unique identifier for those cells we don't want, and then teach the immune system to identify and attack those cells"?<p>I guess that indeed that is a vaccine. I always interpreted "vaccine" as "teaching your body how to kill foreign organisms by training it on what the organisms "look" like." (yes, this abstraction is certain to be way oversimplified)