Once synthesized, the histones move into the cell nucleus, where a section of DNA wraps around them to form a structure that resembles beads, or knots, on a string.

一旦合成，组蛋白就会进入细胞核，细胞核内的 DNA 片段会将组蛋白包裹起来，形成一种类似串珠或绳结的结构。

youdao

It is easily extracted, because it is one of a handful of genes found outside the cell nucleus, in structures called mitochondria.

它很容易提取，因为它是在细胞核之外、叫做线粒体的结构里被发现的少量基因之一。

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They lie outside the nucleus that houses the main human genome, and because there may be hundreds of them in each cell, their DNA is particularly easy to detect.

它们位于人类基因组的核心之外，由于在每个细胞内它们的存在都数以百千计，因此它们的DNA就特别容易被检测到。

youdao

"All genes are encoded by DNA and the DNA is present in the chromosomes in the cell nucleus and telomeres, they are the ends of the chromosomes and they have an important function to protect the chromosomes and maintain the integrity of the chromosomes."

VOA: special.2009.10.07

One of the most obvious things about a red blood cell is it doesn't have nucleus, it has no nucleus.

红细胞最为明显的不同就是,它是无核的,它没有细胞核

耶鲁公开课 - 生物医学工程探索课程节选

And the nucleus name was used as an analogy to the nucleus of a cell so in some ways that makes it easier to see the connection but I think it can also be a little bit confusing for maybe 7th graders that are learning both at the same time, that this nucleus acts very different from a nucleus in a cell, although, of course, there many of them in the nucleus of a cell.

原子核这个名字的命名,是类似于细胞核,这样会让人们更容易看到两者之间的联系,但我觉得这样可能,会给正在学这两个课程的,7年级学生带来困惑，原子核的行为,和细胞核完全不同，虽然在细胞核。

麻省理工公开课 - 化学原理课程节选

Unlike HIV, which lives in the nucleus of the cell, hep-C sets up shop outside the nucleus in the cytoplasm.

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Then the nucleus of a cell taken from the body of the person to be cloned would be transferred into the shell.

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Then the nucleus of a cell taken from the body of the person to be cloned would be inserted into the shell.

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