<unk> ing (or<unk> ing) is a medical process used to regrow tissue and bone, including limbs and organs. The<unk>  is a three-dimensional structure composed of polymer fibers very small that are scaled from a Nanometer (10−9 m) scale. Developed by the American military, the medical technology uses a microscopic apparatus made of fine polymer fibers called a<unk> . Damaged cells grip to the<unk>  and begin to rebuild missing bone and tissue through tiny holes in the<unk> . As tissue grows, the<unk>  is absorbed into the body and disappears completely.<unk> ing has also been used to regrow burned skin. The process cannot grow complex organs like hearts. Historically, research on<unk> s dates back to at least the late 1980s when Simon showed that electrospinning could be used to produced nano- and submicron-scale polymeric fibrous<unk> s specifically intended for use as in vitro cell and tissue substrates. This early use of electrospun fibrous lattices for cell culture and tissue engineering showed that various cell types would adhere to and proliferate upon polycarbonate fibers. It was noted that as opposed to the flattened morphology typically seen in 2D culture, cells grown on the electrospun fibers exhibited a more rounded 3-dimensional morphology generally observed of tissues in vivo.
Nano-scaffold
Bioceramic
Nanocarriers
Ligature 
Artificial cartilage
Tissue engineering
Immunoconjugate
Graft 