Pasquale Maassen - Regenerate

on Zimmer-Records 2009 / Zimmer039
03/21/2009 Creative Commons BY-NC
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In biology, an organism is said to regenerate a lost or damaged part if the part regrows so that the original function is restored. Regenerative capacity is inversely related to complexity: in general, the more complex an animal is the less regeneration it is capable of. Whereas newts, for example, can regenerate severed limbs mammals cannot. Limb regeneration in newts occurs in two major steps, first de-differentiation of adult cells into a stem cell state similar to embryonic cells and second, development of these cells into new tissue more or less the same way it developed the first time. Simpler animals like planaria have an enhanced capacity to regenerate because the adults retain clusters of stem cells within their bodies which migrate to the parts of the body that need healing then divide and differentiate to provide the required missing tissue.

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