细胞分裂

In the studies on transferring and identifying alien chro-mosomes into wheat,the combined use of mitotic and meioticchromosome N-banding is also successfully practiced in deter-mination of T.durum-H.villosa amphipoid,five wheatalien disomic additions with H.villosa chromosomes,〓〓,alien sulstitution line with chromosome 〓 andsome translocation lines.

在外源染色体导入、鉴定研究中，利用根尖有丝分裂中期染色体和花粉母细胞减数分裂中期Ⅰ染色体的N-分带，快速、准确地鉴定了硬粒小麦一簇毛麦双二倍体、普通小麦一簇毛麦异耐加系V〓、V〓、V〓、V〓和V〓，普通小麦一簇毛麦异代换系V〓以及一些具有易位的杂种后代。

In the culture of the protoplast, the first division occurred within 3 to 5 days, and the embryogenic cell cluster could be observed 30 days after culture.

叶肉原生质体培养，在3—5d开始第一次分裂，并能持续分裂至形成胚性细胞团。

Elegans ortholog of the transcription factor Engrailed, controls symmetric and asymmetric division of stem cell-like seam cells.

在ceh-16功能缺失的突变体中，原本应该进行对称分裂的侧线细胞会异常而进行不对称分裂，而且如果在ceh-16突变体中导入人的同源基因 En2能够回复这种异常表型，说明ceh-16的这种调节功能在进化过程中是十分保守的。

Mitotic rate was low in all cases, ranging from 0 to 2 mitoses/10 high-power fields.

所有病例中的细胞有丝分裂率都很低，0-2个有丝分裂/10个高倍视野。

In mixoploid plants, somatic cells with 2n=25~29 were most frequent except for a few haploid cells (2n=19) and chromosome doubling cells (2n=50~60). Abnormal chromosome behaviors were observed in pollen mother cells from mixoploid BI-1 and haploid, including chromosome bridges, laggard chromosomes, meiotic cycle asynchrony and unequal separation of chromosomes.

对混倍体植株BI-1和单倍体植株的花粉母细胞(Pollen mother cells，PMCs)减数分裂染色体行为观察发现，高频率出现染色体落后、染色体桥、染色体分裂周期不同步、不均等分离等异常染色体行为。

Result: A549 cell was blocked in prometaphase by monastrol and the mitosis cells were monopolar spindlelike.

结果：Monastrol阻滞人肺腺癌细胞系A549有丝分裂于前中期，且分裂期细胞表现为单极纺锤体。

Adding fresh medium to cultures, when they had been cultured for 5-8 days, could promote cell sustained division, after which, adding a medium with lower concentration osmatic substance or without osmatic one could futher stimulate the cell division and ensure the active growth of the cell masses.

采用液体浅层培养方法，对埃斯基和雷蒙特红豆草的原生质体进行了培养。埃斯基花茎愈伤组织的原生质体在VK和Kao＇s培养基中2-6天分裂，2周内形成细胞团，19天时的分裂率和克隆率分别为71.41-76.19％、64.78-67.03％。

Results The cerebral ischemia may augment the proliferation and differentiation of NSC in the subventricular zone and subgranular zone of hippocampus and,might improve neural self-repair after ischemic insults.

NSC的增殖、分化潜能，使其可以作为新生神经细胞的&种子&，为脑缺血等中枢神经系统( centralnerve system，CNS)疾病的治疗性再生和基因治疗提供了可能。1 NSC的生物学特性NSC具有以下生物学特征：( 1 )自我维持和自我更新的能力；( 2 )多方向分化潜能，能分化本系大部分类型的细胞；( 3)增殖分裂能力，能无限的增殖分裂而产生大量的后代

Here we use long-term live-cell imaging to demonstrate that cells with multiple centrosomes rarely undergo multipolar cell divisions, and the progeny of these divisions are typically inviable.

但是现在，长期活细胞成像显示，CIN癌细胞很少经历多极分裂，而且甚至当它们经历这种分裂的时候，所产生的也主要是无法生存的后代。

The mitotic count was higher than 5/50HPF in 5 cases in which the diameters of tumor were above or equal to 5 cm. Cystification, hemorrage or necrosis were found in 4 cases and mucification in 1 case. The mitotic count was 2-5/50HPF in 2 cases which were epithelioid cell and tumor diameter were 2-4 cm with mucification in 1 case.

核分裂像大于5/50HPF的5例中肿瘤直径均大于或等于5 cm，其中4例伴有囊性变、出血或坏死，1例伴有黏液样变。2例核分裂像在2~5/50HPF者均为上皮样细胞型，其中1例伴有黏液样变，肿瘤直径均2~4 cm。

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。