目的：克隆并表达艰难梭菌毒素A羧基末端受体结合区基因。

AIM: to obtain the high expression of the gene coding for clostridium difficile toxin a receptor binding zone.

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目的：克隆成骨蛋白-1（OP-1）成熟蛋白编码区基因。

Aim: Cloning and sequencing of hOP-1 cDNA encoding mature protein.

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目的：克隆小鼠牙本质涎蛋白(DSP)成熟肽编码区基因。

Aim: Cloning and partially sequencing of mouse dentin sialoprotein (DSP) encoding mature protein.

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