Why can’t you just infect a cancer so that the immune system can attack it?
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Rather than do this, which is dangerous for obvious reasons, one strategy we have successfully used is to better equip our immune cells to recognize the cancer cells. The most famous example of this are known as CAR T-cells, which are generically modified T-cells from cancer patient that we supercharge to fight cancer. The genetic modification is what makes those T-cells able to recognize the cancer cells and only the cancer cells. We then grow the modified T-cells in mass and reintroduce them to the cancer patient. The first time this technique was tried, the patients almost died because their kidneys were clogged with too many dead cancer cells to cope with.
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