Once these are discovered, the proteins they encode can be added to the lists of those that are targets for the molecular medicinal drug-makers.

一旦这些基因被我们发现，它们所分解出的蛋白就能被很好地定位并分子药品制造商在药物制造中所利用。

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In other cases, drug companies start with a drug from nature and change it into its final medicinal form.

在另一些情况下，药品公司开始用自然药物，并把它改变成最终的医药形式。

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Katy Swaine, head of legal services at drug charity Release, thinks there is some ambiguity about what constitutes a medicinal form of the drug.

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He says that since the 1970s there has been a movement in the US advocating that marijuana should be legalised, which began with the medicinal use of the drug because it "was hard to argue against on compassionate grounds when people suffering from cancer and Aids might get relief from their pain".

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During 2011, at least 640 accidents were caused by drug-drivers using both illegal and medicinal substances.

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