Membrane lipid microdomain is a newly discovered membrane confined domain which consists of sphingomyelin, choles terol , glycosphingolipid and many GPI anchored proteins.

微区为近年现的广泛存在于质膜,主要由糖鞘、鞘磷、胆固醇及多GPI锚联蛋白组的局限性结构域。