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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >MICROTUBULE FORMATION ON THE NUCLEAR SURFACE DURING MEIOSIS IN ACETABULARIA ACETABULUM
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MICROTUBULE FORMATION ON THE NUCLEAR SURFACE DURING MEIOSIS IN ACETABULARIA ACETABULUM

机译:ACE的减数分裂过程中核表面的微管形成

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摘要

Microtubules (MT) are a feature of all eukaryotic cells. Ilowever, they have not been observed in the cytoplasm of the vegetative phase of Acetabularia acetabulum. Previous investigators have reported that, in the propagative phase, MTs function as anchors in the transport of secondary nuclei to the cap. They also form elaborate arrays around nuclei during cyst formation. The life history of A. acetabulum is marked by changes In chromatin, the nucleolus, and the perinuclear cytoplasm. In this study light microscopical features of the nucleolus and changes in chromatin, labelled with anti-histon antibodies, were used to define the developmental stages. And-tubulin antibodies have been used to trace the origin and development of MTs. MTs are formed on the surface of the primary nucleus. They are organized first into short thick ''sticks'' and then later elongate into thinner strands which enclose the nucleus in a dense network. Following these events on the surface of the nucleus, the spindle develops inside the nuclear membrane which remains intact throughout the mitotic division. [References: 25]
机译:微管(MT)是所有真核细胞的特征。迄今为止,尚未在髋臼无花果营养期的细胞质中观察到它们。以前的研究人员已经报道,在繁殖期,MTs在次核向顶盖的运输中起锚的作用。在囊肿形成过程中,它们还在细胞核周围形成精细的阵列。髋臼的生命史以染色质,核仁和核周细胞质的变化为标志。在这项研究中,用抗组蛋白抗体标记的核仁的光学显微镜特征和染色质的变化被用来定义发育阶段。和微管蛋白抗体已用于追踪MT的起源和发展。 MTs在原核的表面上形成。它们首先被组织成短而粗的“棒”,然后被伸长成更细的线,将核包围在一个密集的网络中。在细胞核表面发生这些事件后,纺锤体会在核膜内部发育,并在整个有丝分裂中保持完整。 [参考:25]

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