n.[生化]胞壁质
3.Archaean cell walls lack murein, a common component of bacterial cell walls, and their lipids have ether links rather than ester links. 古细菌的细胞壁缺乏细菌细胞壁组成的普遍物质-胞壁质，其连接是醚连接而不是酯连接。
murein lipoprotein 胞壁质脂蛋白
murein transpeptidase 胞壁质转肽酶
