家蚕卵发生初期的离子途径活性测定

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<正> 生物膜是形质膜(细胞膜)和内质网(细胞内小器官)膜的总称,由磷脂质的2分子层膜及其附着的膜蛋白质构成。生物膜担负着间壁的任务,具有容许若干物质透过的构造。例如神经细胞,由于细胞膜离子透过性的骤变而产生兴奋电位。这种现象,是因存在于细胞膜的离子途径而引起的。离子途径是具有离子透过机能的膜蛋白质的总称,存在于生物膜中。Kozuka 和 Takahoshi(1982)证明了
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