Conclusion: Except age increase, there is abnormal expression of telomerase activity in nucleus cell of blood of patients with hypertension.

结论：除增龄外，高血压病患者外周血单个核细胞有端粒酶活性异常表达，且与增龄无明显关系。

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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。

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The nucleus is removed from the egg cell.

细胞核已经从卵细胞中移除。

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"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

Many steroid hormones act because they bind to cellulars - to receptors that are deep within the cell, often inside the nucleus.

许多类固醇激素能够起效是因为,其与存在于细胞内部的受体相结合,这类受体通常在细胞核内

耶鲁公开课 - 生物医学工程探索课程节选

This begins with a stimulus, such as an electric shock, that promotes the fusion of an egg cell that has had its nucleus removed with a donor cell whose nucleus it will assume.

ECONOMIST: Cloning around

Sir Ian and his team fused the genetic information from an adult sheep cell nucleus with an egg cell to form an embryo that developed into a genetically identical copy of the original adult.

BBC: Dolly the sheep pioneer knighted

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

FORBES: The Next HIV?