According to “Central News Agency” reports, British and Canadian researchers have developed a method to grow human universal cells from skin cells without the use of viruses, and this new method is less likely to make genes cancerous. It can be said to be a major breakthrough in regenerative medicine. A research group formed by Keisuke Kio, a professor at the University of Edinburgh in the United Kingdom, and a research group in Canada have developed the first human universal cells developed without the use of viruses, and the efficiency of the former is more than 25 times higher compared to that developed with viruses. The research results were published in the electronic edition of the British scientific journal “Nature” on the first of this month. The first human universal cells were developed using “retrovirus” (retrovirus) to introduce several genes into body cells, but some scientists believe that in order to implant genes into the chromosomes of body cells, retroviruses are prone to gene abnormalities, leading to cancer. In order to create a more secure universal cell, Keisuke Kimio and other researchers successfully introduced the four genes required to create a universal cell into the fibroblast of a human fetus by using a transposon. （The method initially used by Keisuke and his team was able to remove the implanted genes, but it left some traces and had safety implications. However, in conjunction with a technique developed independently by a Canadian research group, four genes were successfully removed. After the genes were removed from the chromosomes, they also had the ability to differentiate into various cells. Developed the universal cells of Japan’s Kyoto University Professor Shinya Yamanaka, last year did not use the virus to develop a mouse universal cells, but he did not succeed in creating human universal cells.