这个词是什么意思？
A process of selective diffusion through a membrane. It is usually used to separate low-molecular-weight solutes which diffuse through the membrane from the colloidal and high-molecular-weight solutes which do not. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D003956 · MeSH 2026。
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