Tick Tel Tick Tel.......

a: The telomere ~
b: a cellular clock

What: "The telomere is like a cellular clock, because every time a cell divides, the telomere shortens. After a cell has grown and divided a few dozen times, the telomeres turn on an alarm system that prevents further division. If this clock doesn't function right, cells either end up with damaged chromosomes or they become "immortal" and continue dividing endlessly -- either way it's bad news and leads to cancer or disease."

Writer: Not Stated
Date: May 14 2013 6:22 PM

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