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> things like treating immune cells to teach them to attack cancer cell. These efforts have often been disappointing.

I disagree, things like Car-T cell therapy have been some of the most exciting developments in the fight against cancers

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Yep, that's because CARs are one of the first medically relevant genetic engineering projects that is not just a "cut-and-paste change". It is the insertion of a new capability into the immune cell. That is of a very different kind than prior approaches. And it's why the movement forward here really will start to accelerate as there are more and more changes that come online that more resemble CARs - and are inventive of new functions rather than just a simple tweak.

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