The theory is that cancer cells develop a protein barrier that hides their anomaly from the immune system. The polio virus is thought to damage that and the imm

The theory is that cancer cells develop a protein barrier that hides their anomaly from the immune system. The polio virus is thought to damage that and the immune system thus starts to recognize them as mutated cells. For the patients in the 60 minutes special who experienced remission (if you will), they received one injection, then it took over a year for the tumors to go away.