三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

CD170, also known as Siglec-5 or OBBP2, is a type I transmembrane glycoprotein and a member of the sialic acid-binding Ig-like lectin （Siglec） family. It is expressed on various immune cells, including monocytes, neutrophils, macrophages, and dendritic cells. This molecule is characterized by its ability to bind sialic acids, which are often found on the surface of cells. It contains an immunoreceptor tyrosine-based inhibitory motif （ITIM） in its cytoplasmic domain, which is involved in intracellular signaling and can inhibit the activation of immune cells. CD170 is involved in mediating sialic acid-dependent cell adhesion and plays a role in immune regulation. In addition, it has been implicated in immune evasion by certain pathogens, such as Group B Streptococcus.