Tissue Repair and Regeneration
refers to the replacement of destroyed tissue by living tissue and comprises two essential components . The differentiation between the two is based on the resultant tissue. In Regeneration, specialized tissues are replaced by the proliferation of nearby undamaged specialized cells. In Repair, lost tissue is substituted by granulation tissue which develops to form scar tissue. Recently researchers have described the ability of tissue-resident adult (somatic) to repopulate organs such as the liver and pancreas.