词汇 | microtubule |
释义 | microtubule noun[ C ] anatomy specializeduk /ˌmaɪ.krəʊˈtʃuː.bjuːl/ us /ˌmaɪ.kroʊˈtuː.bjuːl/ a hollow tube that helps form the shape and structure inside the cells of living things: At one stage in the process, the chromosomes are pulled together in a regular pattern by tiny threads called microtubules. Microtubule distribution differs among species. Microtubules are sensitive to fluctuations of temperature in mammalian oocytes. The drug inhibits microtubule assembly in various cells. Both microtubules and microfilaments are closely associated with the structure of the spindle. Cells actin anaphase anti-platelet assort axoplasm histochemistry histography homologous chromosomes infiltration intercellular nerve fibre neurofibril neurofibrillary neuroglia neuroglial tetrad thrombocyte thymocyte turgor unciliated Related wordmicrotubular Examples of microtubulemicrotubule The submembranous cortical microtubules are spiralled at an angle of about 40 to the hypothetical spermatozoon axis and form a discontinuous layer (fig. 17). They are the microtubules, the actincontaining microfilaments and the intermediate filaments. Dyneins move toward the (x) end of microtubules, and kinesins move toward the (+) end. Eight microtubules could be traced in longitudinal sections of the tachyzoites. They are discussed in relation to the action of established microtubule inhibitors, as well as the benzimidazole derivative, triclabendazole. The affected patients have a rare ultrastructural defect of intermittent absence of the ciliary central pair microtubules. Secondly, microtubules are not labelled by the dextran. The small size of the microtubules unfortunately prevents application of this type of analysis to the association of calmodulin with microtubules. Only a few microtubules emanate from the metaphase plate of chromosomes. Also, there were microtubules and microfilaments in the cytoplasm. Again, the microtubules of the central aster run along the pronuclear surface and reach the cell cortex. All microtubules associate with the meiotic spindle and asters. However, fully developed microtubule asters were not observed. The subsequent fate of the female centrosome is unclear, but it appears to lose both microtubule nucleating activity and reproductive ability. Such variability and the presence of flagella and microtubules in their preparations make their data not comparable with ours. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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