Previews + Extras
An American Cancer Patient Receives Treatment in Cuba
S47 E5 - 4m 51s
In 2015, doctors diagnosed George Keays with stage 4 lung cancer, which has low survival rates beyond one or two years. Can a vaccine in Cuba help him more than drugs available in the U.S.?
How the Immune System Fights Cancer
S47 E5 - 2m 49s
Researchers discover how cancer masks itself from the immune system and figure out how patients’ immune systems can recognize cancer cells and attack them.
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