For the first time scientists were able with the help of three-dimensional printing has been able to create structures composed of living tissues, the size and strength of which can replace human tissue. Scientists at the Institute for regenerative medicine Wake forest (USA) created the ear, bones and muscles, using plastmassovaya materials and living cells of humans, rats, rabbits and mice. During the process of printing cells are not killed, which in itself was an achievement compared with earlier experiments.
Cells obtained from rodents structure were successfully implanted them. According to scientists, if the technology will work the same in humans, then soon it will be possible to create cartilage and bone, using cells patients.
Work on the creation of tissues and organs using three-dimensional printing is already not the first year, however, all the resulting structure is either too fragile or too small or too simple. Now scientists have shown that a 3D printer can create functional tissues with blood vessels, from which it is possible to obtain structures that are large enough for use in a clinical setting.
Implants are due to layer-by-layer to overlay gels containing cells, and similar to the plastic material. Then use the printer is added to the outer polymeric shell that allows the structure to hold the shape during implantation. After implantation all the extra materials gradually disintegrate. Simultaneously, live cells form a supporting matrix, which helps the implant to hold shape. In the end, the cells are organized so that they no longer needed supporting materials.
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