Re-Growing Organs

When Lee Spievack sliced off the end of his finger a few years ago, his brother sent him some powder to sprinkle on it. In four weeks, his fingertip had grown back! Dr. Steven Badylak explains:
That powder is a substance made from pig bladders called extracellular matrix. It is a mix of protein and connective tissue surgeons often use to repair tendons and it holds some of the secrets behind the emerging new science of regenerative medicine.

"It tells the body, start that process of tissue regrowth," said Badylak.

Badlayk is one of the many scientists who now believe every tissue in the body has cells which are capable of regeneration. All scientists have to do is find enough of those cells and "direct" them to grow.

"Somehow the matrix summons the cells and tell them what to do," Badylak explained. "It helps instruct them in terms of where they need to go, how they need to differentiate - should I become a blood vessel, a nerve, a muscle cell or whatever."

Scientists are studying the matrix to grow organs for transplant and to repair war wounds. Link -via Digg

Previously at Neatorama: Regrowing Human Limbs

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actually now they can grow organs in a petri dish. i would love to do this as a job when im older but i have no idea what classes to take or how to get a job in it. if anyone can help me i would appreciate it. thanx!(; i think that the growing of organs in a petri dish could help out more than this powder stuff. it would save more lives for sure too. o and im only 15 but im very interested in this stuff.
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*nods and agrees with TheSquid*

Any finger amputation from fingertip to the distal joint (the first bend after the fingertip) has the capability of regenerating all by its little lonesome; no pig protein or bacon required. This includes nerves, nailbed, nail; only the fingerprint may be beyond repair.
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fingertips have been known to regrow with out the use of any pig bladder. I myself lost the tip of my thumb to an xacto knife, cut down far enough to lose half the nail. The tip regrew on its own and the only noticeable difference is a scar the size of a pinhead right at the tip.
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So, let me get this straight... they take a pig bladder, grind it into tiny powder and aply it on some injured part of the body ( Missing limb ) and *BAM* 4 weeks latter a new limb has appeared?

And nobody knew this before now?
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