C ancer Detectives: Finding the Cures should come with a rare warning: may make you feel hopeful for humanity and marginally less convinced that we are all willingly leaping into a handcart and smoothing our own paths to hell.

This is an hour that outlines the work being done to create vaccines against cancers. Lung cancer, specifically, at the moment – 50,000 cases of which are diagnosed each year in the UK and which is the most common cause of cancer-related death – but with the potential to prevent many more types in the future.

That such a fantastic possibility is moving out of the realms of the fantastical is because of the progress that has been made understanding the body’s immune system and the work it does zapping (medical term) so many cells, probably on a daily basis, when th

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