Membranes contain a wide diversity of lipids, all of which are amphipathic; that is, they contain both hydrophilic and hydrophobic regions.

 
  • 多種類(lèi)型的動(dòng)物細胞被細胞外基質(zhì)所包繞,細胞外基質(zhì)是由胞外物質(zhì)所形成的網(wǎng)絡(luò )結構,緊鄰質(zhì)膜存在。
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