Sciencespeaking topic
One reason we age is that our cells can only divide a limited number of times: with each division the 'protective cap' at the ends of the chromosomes shortens a little, and when it runs out the cell retires. So there's a counter ticking inside us. Is that counter a fate, or a brake that protects us from cancer?
— telomeres / Hayflick limit
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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