"We started the forearm and the wrist of the forelimb to try out the method. But this technology can also be suitable for upper arms and legs", - the magazine gives the words of Harald Ott (Harald Ott) from the General Clinical hospital of the state of Massachusetts in Boston, who led the work of scientists.
 

 

the Experiment consisted of two stages. On the first foot dead rats-donor treated with special products that are "washed" the soft tissue from the body leaving only the collagen casings. This helped keep its "architecture". In the case of rat foot scaffolding for cells included blood vessels, tendons, muscles and bones.

in the second stage of "form" put the appropriate cells of the rat recipient. Thereafter, cells are fed into the bioreactor, so that they began to share and filled collagen casings.

According to Harald Ott, raise the foot was much harder than the trachea (which scientists experimented before), because different types of tissue in the extremities. Therefore, for the experiment he had first to make the artery and connect it to an artificial circulatory system to supply all new cells with nutrients.
 

To test the newly grown muscles scientists stimulated them to electrical pulses and found that the foot can be compressed and relax.  Also, experts have tried to transplant bionic "prosthetic" healthy rats blood circulation was normal. Test results relating to management of muscle and rejection yet – first you need to mend bones, tendons, and other tissues. However, the immunity recipient must not reject grown a foot since the soft tissues of the donor in the new body.
 

Also initiated an experiment in which the "form" of the paw of the primacy of the transplanted human cells. However, according to scientists, up to the moment when we can talk about tests bionic prostheses for people who need at least another ten years.