In the cortex, DNA damage appears to outstrip the cells’ ability to repair themselves

When a crucial DNA repair kit is disabled, brain cells die, providing a hint of what can go awry in the late stages of multiple sclerosis. In this mouse brain sample, DNA damage appears in green and dead cells are red.

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When a crucial DNA repair kit is disabled, brain cells die, providing a hint of what can go awry in the late stages of multiple sclerosis.…