1. The core consists of 140 base pair of DNA wrapped around a globular histone bead containing two each of histones H2A, H2B, H3 and H4.
核小体核心由140个碱基对的DNA围绕一个组蛋白小球组成,每一个组蛋白小球包含两个H_2A、H_2B、H3和H4的四聚体分子。

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2. The process for producing an annular, concentrically twisted bead cord (2) includes spirally winding side wires (12) around an annular core (11) to form a sheath layer (13).
该制造方法是通过围绕环形芯(11)螺旋地缠绕侧线(12)而形成套层(13)来制造环形同心绞股胎圈帘线的方法。

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3. The process for producing an annular, concentrically twisted bead cord (2) includes spirally winding side wires (12) around an annular core (11) to form a sheath layer (13).
该制造方法是通过围绕环形芯(11)螺旋地缠绕侧线(12)而形成套层(13)来制造环形同心绞股胎圈帘线的方法。

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