黏質體Cosmid,又譯黏粒)是一種以λ噬菌體(Lambda phage)中的cos sequences所建構而成的質體,是常用的選殖載體(cloning vector)之一,可用於建構基因組庫。最高可置入44000個鹼基對,高於質體的10000到15000。

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使用黏質體進行DNA克隆的步驟

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