On November 18, 2001 (October 4, 2001 in the lunar calendar), our scientists created gastrointestinal mucosa tissue in vitro. On November 18, 2001, the relevant person in charge of the Chinese Medical Association announced in Beijing that Chinese scientists have successfully cultured stem cells into gastric and intestinal mucosa tissues in vitro, marking that human gastrointestinal mucosa can be regenerated after injury. This is another major breakthrough in the field of reconstructing living organs and tissues after using in situ culture of stem cells to achieve all-round repair of skin tissue. This achievement was completed by a scientific research team led by Professor Xu Rongxiang, a Chinese life scientist. The scientists used a special nutrient that promotes stem cell proliferation and cultured gastric and intestinal wall tissue cells taken from mice in vitro. This substance comes from plants and is the only living substance obtained by humans so far that has the effect of activating cell functions and repairing tissues. Through experiments, three steps of stem cell proliferation, connection of multiple stem cells, and tissue combination were completed, and finally new gastrointestinal mucosa tissue was formed. This is the first time in the history of life sciences that organs and tissues have developed in vitro. This shows that after gastrointestinal mucosal tissue is damaged, the stem cell potential of tissue cells in situ can be activated and replicated into new gastrointestinal mucosal tissue. Relevant experts from the Chinese Medical Association said that the achievement has great application value in clinical medicine. The first is the treatment of gastric diseases, which can not only protect the stomach wall, but also physiologically repair ulcer tissue; the second is the improvement of intestinal function, which can not only repair damaged intestinal mucosa, but also ensure the balanced absorption of nutrients by intestinal mucosa cells and enhance intestinal absorption. function.