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After Wu Hao's words fell, the promotional introduction video began to play.

As for Wu Hao, he also took the opportunity to let out a long sigh of relief, and drank the water Shen Ning handed him. While drinking water, the makeup team next to him also began to quickly help him touch up his makeup and organize his clothes.

After finishing all this work, Wu Hao took a short rest and waited for the short film to end.

Reappearing in front of the camera, Wu Hao said with a smile: "Next, I will introduce to you two technical scientific research achievements created by our bio-3D printing technology.

First of all, because it is in the development stage, it is impossible for us to conduct biological clinical trials. So we will use some animals to conduct experiments.

First of all, I want to introduce to you that we have successfully printed a piece of pig skin tissue using cells from pigs.

We all know that the body structure of pigs is very similar to our human body. Some scientists and doctors have even tried to transplant organs from pigs to humans. For example, in the case that attracted a lot of attention and controversy a few years ago, scientists successfully transplanted pigs into humans. The heart is transplanted to the patient to replace the original heart.

Pig skin tissue is also very similar to human skin tissue. As long as pig skin tissue can be printed, it can theoretically print human skin tissue.

After repeated experiments, at present, we have successfully used pig cells to print out a thirteen square centimeter piece of pig skin tissue.

The entire printing time took 11 hours and 7 minutes, which is relatively slow, but we successfully restored and printed a piece of skin tissue that is 100% connected to the skin tissue of the pig.

Please see, the thirteen-square-centimeter piece of skin tissue we printed is very complete, including epidermal tissue and dermal tissue. Including the stratum corneum, transparent layer, granular layer and germinal layer in the epidermis. The dermis and reticular layer in the dermis are also clearly visible under the microscope. We even printed out the cat's pores, sweat glands, hair follicles and so on.

To test whether the printed skin was viable, we transplanted it into a pig.

After continuous observation and care and treatment, we found that the printed skin has survived on the pig, the sutured wound has healed, and new hair has grown in the printed pores. "

At the same time as Wu Hao introduced, related videos and pictures were also played simultaneously. In the video, a piece of fresh white skin about three to four centimeters in square was taken out of the biological 3D printer by fully armed scientists. This is also the first time that everyone has seen the whole picture of this biological 3D printer. The whole biological 3D printer is very large, and it prints more than everyone imagined, and the overall appearance is white. From the appearance alone, it is impossible to tell that this thing is a biological 3D printer.

The piece of skin that was taken out was immediately put into a preservation box and sent to the operating room. An anesthetized piglet was lying on the operating bed. Both sides of the piglet were covered with green cloth, and the surgical wound was exposed in the middle. The pig hair has been shaved clean, and a wound similar to the size of the printed skin has been cut out, and the original skin of the piglet has been removed.

The doctors took the printed skin out of the preservation box, and after repeated disinfection, they covered the wound on the piglet with the skin, and then carefully sewed it up.

Suturing a piece of skin that was not much bigger than a coin was an extreme test of the patience of the doctors. With the intensive figure-of-eight suture needles, this piece of skin was sutured on the piglet's wound. After being swabbed, bandaging followed.

The next step is to pay attention to the condition of this skin every day. The initial inflammation and swelling will gradually subside and recover, the wound will heal, and the sutures will fall off.

There were even a few fine hairs growing on the implanted skin, and the skin was completely integrated with the skin of the piglet.

Seeing this, everyone cheered excitedly. This is definitely a great medical technology research achievement. You must know that this is much more difficult than the single printing of blood vessels before. Skin tissue looks simple, but it is actually very complex and has many functions.

The printed piece of skin not only survived the transplant, but it was alive and well, with hair growing on it. This means that during the printing process, the pig skin tissue was perfectly reproduced and printed, including the hair follicles in the skin, and has the growth function, so that hair can grow.

Pig skin tissue is very similar to human skin tissue. The success of this experiment means that since pig skin that can be transplanted and survived can be printed, human skin can be printed.

This is undoubtedly great news for those patients with damaged skin and disfigurement, allowing them to see hope again.

Of course, more people see infinite possibilities in this technology. Now that this technology can print out real skin tissue, it can also print out other tissues and organs, which means that human cloned organ transplantation in the future is not a dream, which will greatly link the current shortage of organ resources and save countless people. human life.

However, just when everyone was imagining~lightnovelpub.net~ Wu Hao said aloud: "Currently this technology still has many imperfections, and the 3D bioprinted skin tissue within the thirteen square meters is not enough This is the limit of our current technology.

If you want to break through, you must solve more problems. For example, the thorny problem of too long printing time and low efficiency mentioned above.

Unless we have a major breakthrough in these technologies, then we will be able to print larger-sized skin tissues and lay the foundation for the printing of other organs.

Of course, for now, this technology is also ready for clinical trials. Although a single printer can only print such a large area of ​​skin tissue, if multiple biological 3D printers work together, the area of ​​skin tissue printed is also very objective. It is still very useful to treat some critically ill patients with severely damaged skin and some patients who urgently need skin transplantation.

However, everyone knows that this technology is far from being successfully developed, and is limited by the research cost of existing technologies. The cost of this kind of bio-3D printed skin tissue is very expensive. In a short time, it is difficult to popularize it on a large scale. .

However, this is temporary, and as the technology continues to mature in the future, the cost will gradually decrease. "