DNA is a double stranded molecule shaped like a spiral staircase.

DNA是一种像螺旋阶梯样形状的双链分子。

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Using cellulose (CF-11 ) chromatography a double stranded RNA was purified from the extract of R. sativus-root, termed E.

本实验用CF-11纤维素柱层析，从白萝卜提取物中分离纯化到一种双链RNA，简称E。

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In fact, this virus is a double stranded DNA virus, the virus has a kind of specificity, strictly in the human epidermis, in vitro tissue or experimental animal model, the difficulty of training.

其实，这种病毒是一种双链DNA病毒，这种病毒具有种属特异性，严格寄居人表皮、体外组织或实验动物模型中，培养困难。

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They would naturally hybridize and form a duplex, or a double stranded nucleic acid.

它们会自然杂交并形成双螺旋,或者说双链核酸

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When it sees that sequence in a double stranded DNA it will bind there and it will cut.

当它在双链DNA中发现这个序列,就会与之结合并切割

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This is - what this diagram shows you is-- the forces that hold these individual strands of DNA into a double stranded form.

你们可以看看这个图表,演示了连接两条DNA长链为双螺旋,结构的化学力

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DNA. This molecule is a double-stranded helix made from four different types of sub-molecule.

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The HIV retrovirus, in particular, is a single-stranded RNA virus that duplicates itself in a host cell by converting its genetic code into double-stranded DNA that is then inserted into the host cell.

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Also, repatriation of corporate earnings stranded abroad to avoid double taxation may be a potential windfall.

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