实验表明，所制备的纳滤膜能有效截留二价和多价阳离子，对单价阳离子的截留率极低。
The result showed that bivalent and multivalent cations could be removed effectively, while the rejection of univalent cations was very low.
作者用多价阳离子化合物鱼精蛋白经主动脉恒压灌注大鼠活体肾，造成实验性微小病变型肾病综合征模型。
A rat model of minimal change nephrotic syndrome was induced by kidney artery infusion with the polycation protamine.
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