How cancer starts: how a normal cell turns into cancer
How your immune system finds and kills cancer cells
Scientists think your immune system quietly kills would-be cancer cells, again and again, and you never notice. How can it tell a cancer cell from a healthy one, when both are your own cells?
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Under the microscope, the lab saw something else around Rono's melanoma: immune cells, crowding in. Among them were the body's hunters, the killer T cells.
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How can a T cell tell? Almost every cell of your body shows what it is making inside. It cuts up some of its proteins, the working parts of the cell, and shows small pieces of them on its outside.
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