Transcriber: Andrea McDonough Reviewer: Jessica Ruby

Enough mutations can bypass these fail-safes,

driving these cells to divide recklessly.

That one rogue cell becomes two,

then four,

then eight.

"Ho

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You might remember a pair of TED-Ed Lessons

written and performed by two educators,

Brad Voytek and Tim Verstynen.

These two scientists used a drooling,

hag-faced, animated zombie

as a mechanism to mo

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