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。

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

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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。

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.

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在超微结构上，肿瘤细胞具有逐渐变细的细胞核，且细胞核具有长而细腻的胞浆突起，并与突出的浆膜下的胞吞小泡相关。

Ultrastructurally, the tumor cells had tapering nuclei with long, delicate cytoplasmic processes associated with prominent subplasmalemmal pinocytotic vesicles.

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