And cation exchange membrane only allow cationic through, does not allow anionic through.
而阳离子交换膜只允许阳离子透过，不允许阴离子透过。
As the new peptides contain cationic amino acid residues, they can bond with the negatively charged bacterial membrane and penetrate it.
由于新的多肽中含有阳离子氨基酸残基，所以他们可以和带负电的细菌膜并渗透进去。
Objective: To investigate the influences of different lipids on cellular delivery and fluidity of liposome membrane of cationic liposome.
目的：考察不同脂质体材料对阳离子脂质体细胞转染率和脂质体膜流动性的影响。
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