Kurzweil : "From Kiel University, longevity gene that makes Hydra immortal also controls human aging | Inventer le monde | Scoop.it
Why is the polyp Hydra immortal ? Researchers from Kiel University decided to study it — and unexpectedly discovered a link toaging in humans […].

The tiny fresh water polyp Hydra does not show any signs of aging and is potentially immortal. There is a rather simple biological explanation for this : these animals exclusively reproduce by budding rather than by mating.

A prerequisite for such vegetative-only reproduction is that each polypcontains stem cells capable of continuous proliferation. Due to its immortality, Hydra has been the subject of many studies regarding aging processes for several years…

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Kiel University : http://www.uni-kiel.de/aktuell/pm/2012/2012-332-foxogen-e.shtml