ABSTRACT
Tissue engineering involves biomaterials used as scaffolds for stem or progenitor cells, combined with bioactive molecules. It is an interdisciplinary domain, applying engineering sciences principles to develop biological substitutes, in order to maintain, repair, or improve tissue or organ functions (Langer and Vacanti 1993). According to the definition given by the European Medicine Agency, tissue engineering products (TEP) are products that contain cells or tissue with properties for human tissue regeneration, replacement, or repair. TEP can contain cells of human or animal origin. These cells can be viable or nonviable. TEP can also contain various substances such as cell products, bioactive molecules, biomaterials, or chemical products (Legislation 2007).
