- 問題詳情:圖爲某種質粒表達載體簡圖,小箭頭所指分別爲限制*內切酶EcoRI、BamHI、SamI的酶切位點,P爲啓動子,T爲終止子,ori爲複製原點。已知目的基因的兩端分別有包括EcoRI、BamHI、SamI在內的多種酶的酶切位點。外源DNA*入到ampR或tctR中會導致相應的基因失活(ampR表示氨苄青黴...
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- "TheSamispiritfollowsyou,"hesays.SeveralSamilanguagesarespokenandwritteninthenorthernregionsbytheSamipeople.TheSamihavestrongviewsonenvironmentalmatters.Andyet,throughouttheirhistory,theSamihavealwaysfaceddownseeminglyinsurmountablechallenges,froma...
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