Octaarginine R8's cell penetrating ability: Due to its positively charged nature, R8 octaarnine has strong cell penetration, able to penetrate the cell membrane and enter the cell's interior. This property makes it widely used in the study of drug delivery and gene delivery, which can combine with negatively charged drugs or nucleic acids (such as DNA, siRNA, etc.) to form complexes, and use its cell penetration to help these drugs or nucleic acids pass through the cell membrane and enter the cell to achieve the purpose of cell regulation.