In rare cases, mild nuclear pleomorphism, prominent nucleoli and mitotic figures may be seen.

少數(shù)病人可見多形性胞核、突起的核仁和有絲分裂像。

It is thought to regulate the growth and development of the pollen tube.

另外的粉管核會在花粉管穿過珠心時發(fā)生分裂久久A级免费播放。

More prophase and prometaphase cells may be obtained by this technique.

在培養(yǎng)基中加入5-溴脫氧尿嘧啶核苷使細胞同步化6—8小時自拍日韩葡萄影院在线观看视频，可以得到較多的前期和前中期分裂細胞。

The splitting of the cytoplasm is also restrained therefore they form many multi-core cells. With the reducing of the microfilament the pseudopodium of the cell surface become fewer, shorter and wider.

結(jié)果發(fā)現(xiàn)国内自拍日韩免费观看，在CB作用下91综合久久婷婷久久，癌細胞生長受到抑制，細胞計數(shù)減少中文一日韩一视频一国产；胞質(zhì)分裂受到抑制男生女生黄色网站视频，形成多核細胞；微絲結(jié)構(gòu)減少www久草，細胞表面的偽足變少變短變粗亚洲欧美大码a在线观看。

F1 hybrid has the morphological feature which is between the male and female parents and shoed strong heterosis, exuberant vitality, late ripe period and low rate of self-fertility. The average chromosome configuration of F1 in PMC MI was 18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ. At anphase Ⅰ in PMC, some laggard chromosomes arranged in equatorial plate. Micronucleus and a lot of abnormal cells can be observed at dyad, tetrad and microspore.

雜種F1形態(tài)特征介于雙親之間，具有較強的雜種優(yōu)勢色综合16p，生長旺盛欧美男人天堂网，熟期晚，自交結(jié)實率較低欧美一级久久真人浪潮。F1花粉母細胞減數(shù)分裂中期Ⅰ平均染色體構(gòu)型為18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ，PMC后期Ⅰ觀察到部分落后染色體排列在赤道板上人人操人人摸人人干2010；二分體色哟哟影视基地、四分體和小孢子時期，細胞內(nèi)普遍觀察到微核人人色网，且出現(xiàn)大量異形細胞456小视频。

In prokaryotes the nuclear material is simply a circular strand of DNA, not complexed with histone proteins, and cell division is amitotic.

在原核生物中，核物質(zhì)僅是一個簡單的環(huán)狀 DNA 乐播三级黄三区视频免费，而不與組蛋白結(jié)合日韩手机福利写真在线观看，并且細胞為無絲分裂。

Centrosome A structure found in all eukaryotic cells, except fungi, that forms the SPINDLE during cell division.

中心體：在除真菌以外的所有真核細胞中存在一種結(jié)構(gòu)国家aaaa级黄片，在細胞分裂時可以形成紡錘體污污色色。

During conjugation, the complementary mating type cells unite pairwise undergo meiosis, exchange gametic nuclei and separate again.

在接合生殖期間，交配型互補的細胞相互識別配對欧美性爱欧美精品二区，進行減數(shù)分裂色影音、交換配子核，然后分開国产美腿美女被操。

Results indicated that suppression of malignancy was observed in the hybrid cells, they became differentiated morphologically and functionally by:(1) changes in histochemical staining, nucleus-cytoplasm in ratio, and increase in cell size and nucleal heterochromation, but decrese in cell surface microvilli and number of nucleoli;(2) decrease of growth rate, mitotic index and DNA synthesis rate;(3) loss of the ability to growth in soft agar medium, and non-tumorigenic under heterotransplantation to nude mice;(4) reduction of chromosome number mainly of rat derivative and decrease in chromosomal aberration rate.

實驗結(jié)果表明：（1）雜交細胞出現(xiàn)瘤細胞與網(wǎng)織紅細胞雜交同樣的表型逆轉(zhuǎn)及去惡性化特征国产在线.c，主要表現(xiàn)在細胞體積增大、核質(zhì)比例減邪＠悠倒愠∫磺亚洲色呦呦在线；DNA合同速率降低、分裂指數(shù)下降，細胞生長顯著減慢色污网站免费在线观看；在軟瓊脂中不形成集落亚洲色久悠悠A∨明星换脸，在裸鼠體內(nèi)失去了長瘤能力。

The aim was to understand the mitotic chromosome aberrations in root tip cell of industrial polluted Stellaria media and micronucleus.

［目的］了解工業(yè)污染區(qū)繁縷根尖細胞有絲分裂期染色體的畸變和微核天天摸人人操人人爱。