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Old 02-28-2012, 09:22 AM
 
Location: Texas
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Each time a cell divides the protective telomere 'cap' gets shorter. When they get too short, the cell loses its ability to renew and divide. In an immortal animal we would therefore expect cells to be able to maintain telomere length indefinitely so that they can continue to replicate. Dr Aboobaker predicted that planarian worms actively maintain the ends of their chromosomes in adult stem cells, leading to theoretical immortality.
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Old 02-28-2012, 10:23 AM
 
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Not really new info as i've read about this in the book ''The Immortal Cell'' by Michael West back in the early 2000's.
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Old 02-28-2012, 01:42 PM
 
Location: Matthews, NC
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The only way they can be killed is in a sword fight after their head is chopped off. In the end, there can be only one...

"Here we are, born to be kings, we're the princes of the Universe!"
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Old 02-28-2012, 02:15 PM
 
Location: Texas
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I just wonder if someday, telomeres can be longer.
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Old 02-28-2012, 03:06 PM
 
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Quote:
Originally Posted by Brian.Pearson View Post
I just wonder if someday, telomeres can be longer.
That actually was mentioned in the book i read as scientists were adding Telomerase to the end-caps in petri dishes and that was elongating them and reversing senescence in the cells however i have not a clue if that is working in any animal studies at this time.
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Old 03-01-2012, 07:23 PM
 
Location: NYPD"s 30th Precinct
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There are a handful biologically "immortal" organisms around. The only one I can think of off the top of my head is a certain jellyfish, only a few millimeters long, whose cells can change depending on what is needed.

They can still be killed by injury or whatever of course, they just don't die of "natural causes"
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