Then, a fusion protein expression system was used to express the TNF half molecule.

用融合蛋白表达系统对该半分子进行大肠杆菌表达。

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What we do know is that by three and a half billion years ago the highly complicated molecule DNA had emerged.

我们确信的是，35亿年前高度复杂的分子DNA就出现了。

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Molecule design, construction and high level expression in E. coli. of bimolecular G-CSF with longer half life and higher bioactivities than single molecular G-CSF.

研究目的是分子设计并构建较G-CSF单体分子具有半衰期更长、生物活性更高的新型重组人G-CSF/G-CSF双体分子（简称G-G），并在原核系统进行高效表达。

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So, if we talk about dissociating h 2, we're going from the h 2 molecule, and breaking this bond right in half, so we now have two individual hydrogen atoms here.

那么，如果我们讨论的是离解氢分子，我们将从氢分子开始，使这个键断裂，一分为二，那么就得到了两个分开的氢原子。

麻省理工公开课 - 化学原理课程节选

The corresponding half of the ladder that corresponds to any given ladder, let's say the black DNA molecule that corresponds to the blue one is not just a mirror image.

与任何单链配对的,另一条单链,比方说与蓝色DNA分子,配对的黑色DNA分子,并不是蓝色DNA分子的镜像

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So scientists at Lundbeck cut the Celexa molecule in half to see if it would work better that way.

FORBES: Forest Bears Fruit