词汇 | mitosis |
释义 | mitosis noun[ U ] biology specializeduk /maɪˈtəʊ.sɪs/ us /maɪˈtoʊ.sɪs/pluralmitoses the type of cell division in which one cell divides into two cells that are exactly the same, each with the same number of chromosomes as the original cell: 有丝分裂(细胞分裂过程,一个细胞分裂成两个相同的细胞,每一个都含有与母细胞相同数目的染色体) Our skin cells are continually replaced by mitosis.我们的皮肤细胞不断地通过有丝分裂更新。 Compare meiosis Cells actin anaphase anti-platelet assort axoplasm histochemistry histography homologous chromosomes infiltration intercellular neoplasia nerve fibre neurofibril neurofibrillary neuroglia teratoma tetrad thrombocyte thymocyte turgor Related wordmitotic mitosis | American Dictionarymitosis noun[ U ] us/mɑɪˈtoʊ·sɪs/ biology the type of cell division in which one cell divides into two cells exactly the same, each with the same number of chromosomes (= cell structures) as the original cell Examples of mitosismitosis This nucleus gives rise at the first embryonic mitosis to 20 bivalents which coexist with 20 somatic chromosomes originating from the female pronucleus. Cells undergoing mitosis appeared spherical, covered with blebs and anchored to the substrate by retraction fibres. In this context, it is important to point out that the first divisions after karyogamy tend to deviate from the common pattern of mitosis. Cycling cytoplasmic factors that promote mitosis in the cultured 2-cell mouse embryo. These fragments appeared to be generated through the destruction of nuclei upon entry to mitosis. In the present study we have found that the sister blastomeres of tetraploid embryos reconstructed by fusion can also enter mitosis asynchronously. We conclude, therefore, that the replication-sensitive checkpoints that operate during mitosis are absent or inactive during meiosis. We cannot exclude the possibility that the spindle assembly checkpoint acts during the first mitosis. It would be more accurate to say that the centre was undergoing a kind of spatial mitosis. In normal human cells, the mutant is not present as an endogenous enzyme; the wild-type enzyme is only expressed before mitosis. When pronuclear heterokaryons enter the first mitosis, their nuclei condense and metaphase chromosomes are visualised. The other two smaller cells top of the figure have not started mitosis yet. We focused on the regulation of the first and the second mitosis. This mechanism is most clearly manifested during the first mitosis. During mitosis the endoplasmic reticulum is known to aggregate within the asters of the mitotic apparatus. 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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