细胞分裂

Molecular studies have identified some genes participating in this process, including those regulating anther cell division and differentiation, controlling male meiosis, supporting pollen development, and promoting anther dehiscence.

分子生物学的研究已经发现了一些参与这一过程的基因，包括控制花粉囊组织的分化、小孢子母细胞的减数分裂、小孢子的发育和花药的开裂等。

Taxol to be from the yew bark extract anticancer drug induce and promote tubulin polymerization and depolymerization and prevent stable microtubules, inhibit cell proliferation and mitosis.

紫杉醇本品是从红豆杉树皮中提取的抗癌药，通过诱导和促进微管蛋白聚合，防止解聚和稳定微管，抑制了细胞有丝分裂和增殖。

The effects of copper sulphate, lead acetate, zinc sulphate, cadmium chloride and neckel chloride on growth and root tip cell divition of Cucumis sativus seedlings were studied respectively.

选用黄瓜籽苗为材料，硫酸铜，醋酸铅、硫酸锌、氯化镉和氯化镍为化学处理试剂，研究它们对黄瓜籽苗的生长及其根尖细胞有丝分裂的影响。

Cell resulting from cleavage of a fertilized ovum.

受精卵分裂形成的细胞。

The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over.

染色体交叉在减数分裂过程中成对的染色体之间的接触点产生一种交叉形状的构造，代表着基因互相交换的细胞表现形式

Its chromosome number was 42, and 21 bivalents could be observed at PMC MI. FISH analysis by using genomic DNAs from S. cereale and genomic DNAs from L.

染色体观察结果表明，山农030-1根尖染色体数目为42，花粉母细胞减数分裂中期I染色体构型为2n=21Ⅱ。

Results:The positive expression of P53 and c－Myc protein in nuclei was bound up with poor-differentiated tumours;the positive expression of Fas and c－Myc protein in cytoplasms was consistent with well-differentiated tumours.

采用免疫组织化学方法对骨肉瘤、骨化性纤维瘤、骨纤维结构不良和正常骨痂组织进行c－Myc、Fas和P53蛋白测定，与肿瘤组织学分级、细胞分化及核丝分裂比较分析。

Results A middle age woman had a history of leiomyoma of uterus incision and CT scan shows several nodes in lung. Two gray-whitish nodes were found in the removal specimen, 6 cm、12 cm in respectively diameter, and well demarked from the around tissue. The neoplasia is plenty of tumor cells, some lumenoid structure lined with epithelium in the tumor tissue. Tumor cells is well differentiated and look like smooth muscle cells without the necrosis and karyo-kinesis. The pattern of tumor is similar to the original tumor.

结果 中年女性患者，有子宫平滑肌瘤手术史，胸部CT示右肺多发性结节切除标本见2个灰白色结节，直径分别为6 cm、12 cm，边界清楚，镜下见肿瘤细胞较丰富，并见上皮衬覆的管腔样结构，未见坏死及核分裂象，与原发子宫平滑肌瘤形态相似免疫组化证实为平滑肌源性，且表达雌激素受体。

Pollen grain is just the carrier of the male gametes, which are two nuclei found within the grain.

因为子株是由母株的组织细胞进行有丝分裂而形成的。

In meiosis of pollen mother cells of the tetraploids and the hexaploids, only bivalents were observed in most of the populations, although in several populations or individuals a few univalents or tetravalents appeared. In the hexaploids, hexavalents were not observed.

四倍体和六倍体的花粉母细胞减数分裂染色体构型在大多数居群都为二价体(四倍体中30个二价体，六倍体中45个二价体)，少数居群或是个体除二价体为主外还出现单价体和四价体，六倍体类型没有出现六价体构型。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。