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Tissue engineering is a combination of biomedical science and engineering to regenerate cells, tissues, and organs. It encompasses a multidisciplinary approach toward the development of biological materials to restore and maintain normal functions in diseased or injured tissues. Compared to conventional therapy using drugs, tissue engineering is more effective because tissues with scaffold efficiently deliver cells and drugs. Tissue engineering includes three components including cells, biologically active factors, and biomaterials. Combination of these components enables the scaffolding for cell proliferation and differentiation, the isolation and culture of cells, the delivery system for nucleic acids and proteins. Development of these key technologies will assist and accelerate the regeneration of defective and damaged tissues.With growing enthusiasm and investment, extensive preclinical and clinical trials of stem cell therapy have already been conducted, and more exciting avenues are in sight in many areas. Especially, the broader fields of science and engineering including stem cells, nanotechnology, and tissue engineering as mentioned above are involved for the greater and faster outcomes to be achieved in regenerative medicine. The multidisciplinary collaboration becomes indispensible to advance current goals of cell therapy. It may require years or decades to broadly applied to patients and to have definitive and collective conclusions how this new way of treatment is as effective as its was expected. However, advance of research in stem cells, tissue engineering, and other related field of study would enhance therapeutic potential of regenerative medicine.
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