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首页> 外文期刊>Cell Research >A TEM study on pre-excystment cellular structures of Euplotes encysticus
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A TEM study on pre-excystment cellular structures of Euplotes encysticus

机译：肉食性大螯虾囊泡前细胞结构的TEM研究

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摘要

Right before the excystmeNt of an Euplotes encysticus sawtooth-like folds appeared among the pellicle plas-malemma, the inner and outer alveolar membranes were still sticking together, and were not distinguishable. Mi-crotubular layers already formed at the sites beneath the dorsal cortical pellicle corresponding to vegetative cells, but they still proceed to be organized on the ventral structures. Cristae, highly-tangled with tubular-type structures, appeared on the mitochondria, and were morphologically similar to that of vegetative cells. In the cortical ciliatures, such as ciliary shafts, kinetosomes, surrounding fibrillar cirral baskets, and attached structures of ciliatures, etc., they are different from those in resting cysts which are degenerated or lost. All the cilia-ture microtubules of ciliary shafts are of the 9+2 pattern, but the microtubule-like structure aggregates at triplet -microtubule centers of many kinetosmes, are still under various stages of differentiation. Microtubules beneath the kinetosomal rows are of a developmentally elongated stage; crowded chromatins of various shapes and sizes are found in macronucleus, but there are ho nuclear pores (formed by nuclear membrane as in resting cysts) on the nuclear membrane where these chromatins attached.
机译：在膜状大肠膜间膜中的Eupplotes entsticus的囊肿出现锯齿状褶皱之前，内，外肺泡膜仍粘在一起，并且无法区分。在与皮质细胞相对应的背皮质皮膜下方的部位已经形成了微管小管层，但它们仍继续在腹侧结构上组织。 cristae与管状结构高度缠结，出现在线粒体上，其形态与营养细胞相似。在诸如纤毛干，动子体，周围的纤毛篮筐以及纤毛附着结构等的皮质纤毛中，它们不同于退化或丢失的静止囊肿中的那些。睫状干的所有纤毛微管均为9 + 2模式，但在许多运动学的三联体-微管中心聚集的微管状结构仍处于分化的各个阶段。运动体行下方的微管处于发育拉长阶段。在大核中发现了各种形状和大小的拥挤的染色质，但是在这些染色质附着的核膜上有完整的核孔（由核膜形成，就像在静止的囊肿中一样）。

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