这个词是什么意思？
A large superfamily of cell surface membrane proteins characterized by their four transmembrane domains. They play a role in a variety of processes such as cellular adhesion and motility. They may be involved in the organization of cell surface MEMBRANE MICRODOMAINS that regulate the activation of LEUKOCYTES.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D059470 · MeSH 2026。
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