If it is a human cell, it has no cell wall, only a cell membrane, which is the first line of defense to protect the inside of the cell. Generally, cells have the function of self-regulation and repair, but the cell membrane is difficult to repair, so the damaged cells will generally continue to be in a damaged state until they are eliminated, and because the heteropolysaccharide for repairing the cell membrane is not produced inside the human body, it is mainly ingested from outside the human body. However, the food containing this kind of heteropolysaccharide that can be absorbed by the human body is very low in content. At present, it is found that fungal organisms contain this kind of heteropolysaccharide, such as Ganoderma lucidum, Lentinus edodes, auricularia auricula and other fungi, so this kind of heteropolysaccharide is also called fungal polysaccharide, but it is difficult to extract, and the content is generally below 7 ~ 8%! It is more difficult to buy genuine products in the market! Need to be screened! The hospital does have lentinan needles. You can get them if you need them, but they are very expensive! For cancer patients to repair cells!