所謂黏性末端黏狀末端(英語:Sticky Ends),指DNA重組技術中,DNA限制酶在切開DNA的雙鏈結構時,形成的突出末端,與平末端(Blunt Ends)相對。平末端則是上述切割過程中不突出的末端,所以DNA重組時操作難度稍大於黏性末端。

一種黏性末端,由EcoRI切割而成。
一種平末端,由SmaI切割而成。

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