The entire shoot apex of a horsetail could fit into the large apical cell in the growing tip of a fern. 木贼的整个茎尖可相当于蕨类生长锥中大的顶端细胞。
The apical cell of the first leaf and of the first root originate almost at the same time after the embryo reaches to the 32-celled phase. When the last one falls, I must die, too. 胚胎在32细胞阶段后,第一叶顶端细胞与第一根顶端细胞几乎同时发生。当最后一叶掉落时,我一定也会死去。
Study of K~ (+) channels at the apical membrane of mouse renal proximal tubule cell with patch-clamp 小鼠肾近曲小管上皮细胞顶侧膜钾通道的膜片钳研究
Its first division is transverse and result in a 2-celled proembryo which comprises an apical cell and a basal cell. 合子的第一次分裂为横分裂,形成由顶细胞和基细胞组成的2细胞原胚。
With the devel-opment of the apical cell, the basal cell undergoes transverse division to form two cells: the upper one forms the single cell suspensor; 随着顶细胞的发育,基细胞也进行横分裂产生上下两个细胞,上方一个体积略为增大而形成胚柄;
In the plant vegetative growth, leaf primordia arise from groups of initial cells within the peripheral zone of the shoot apical meristem. Leaf develops by following a series of cell division and differentiation programs to form its final shape and size. 在植物的营养生长阶段,叶原基从植物地上部分顶端分生组织的周边区形成,在一系列细胞分裂和分化程序的指导下,最终发育成叶。
Conclusion: Stem cells or dental epithelial progenitor cells might reside in the cervical loop of the apical end of the rat lower incisor. The present study may provide an excellent cell source for study on the differentiation of dental epithelial cells and tooth regeneration. 结论:鼠切牙唇侧颈环处可能存在牙源性上皮干细胞或前体细胞,为进一步研究牙源性上皮分化和牙组织工程提供细胞来源。
Microsurgical treatment of apical region by combined orbital pterygoid approach Management in squamous cell carcinoma of maxillary sinus with orbital invasion 上颌窦鳞状细胞癌眶侵犯患者眶内容物处理的探讨
Then the one cell near Chalaza end, which was derived from basal cell, underwent perpendicular division again, together with cells derived from apical cell, they formed embryo proper, and then sequentially formed multicellular spherical proembryo, heart-shaped embryo, Torpedo-shaped embryo, mature embryo. 由基细胞分裂来的近合点端的一个细胞再发生纵裂,和从顶细胞分裂来的细胞共同参与胚体的形成,进而产生多细胞球形原胚,心形胚,鱼雷形胚,成熟胚。
Scanning electron microscope and paraffin section observation showed that the shoot apical meristem ( SAM) of the CAPC lines enlarged and projected with increased cell number. 4. 扫描电镜和石蜡切片观察发现,CAPC转基因系花序茎顶端分生组织(SAM)与同时期cpd突变体和野生型相比面积增大,顶端隆起,细胞总数增多,发育加快。
The first division of zygote is transverse and forms a basal cell and an apical cell. The basal cell does not divide, but increases in size, acting as a unicellular funiculus, while the apical cell divides many times. 合子的第一次分裂是横向的,形成的基细胞不再分裂,体积增大后充当一个大的胚柄细胞。
Plastid division is affected in the shoot apical meristem of or homozygous mutant, and only one or two large plastids were observed in a cell. Plastid development in leaves is normal. or纯合突变体顶端分生组织质体分裂发育受到影响,细胞中仅存在一到两个较大的有色体,但叶片质体发育正常。
The division of the apical cell formed globular embryo, heart-shaped embryo and torpedo embryo successively. 原胚经过多次分裂依次形成球形胚、心形胚、鱼雷形胚。
In the apical parts of the epithelium, enterocytes were arranged tightly. There have cell junctional complex of tight junction, intermediate junction and desmosomes. 黏膜上皮顶部的上皮细胞之间排列紧密,有发达的紧密连接,中间连接和桥粒等细胞连接复合体。