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![James Allison and Tasuku Honjo pioneered unleashing the body's own immune system to attack cancer cells.](https://cdn-ak-scissors.b.st-hatena.com/image/square/4aee4ee70c77b9ffa3f70842e6d5a82961604c61/height=288;version=1;width=512/https%3A%2F%2Fmedia.nature.com%2Flw1024%2Fmagazine-assets%2Fd41586-018-06751-0%2Fd41586-018-06751-0_16164052.jpg)