Yes, Lee Spievack, who cut off the tip of his finger while working on a model airplane, actually used a powder made from pig bladder to help the regeneration process. Video after the break.
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
[via BoingBoing – Spluch]