胚细胞

Pekinensis . IAA at concentration of 0.4-1. 0 mg/L in solid MS medium incited many adventitious roots on hypocotyl segments. The earliest anatomic changes were observed on cut surface of hypocotyl segments under optical microscope 24 hours after IAA treatment: cytoplasmic and nuclear density became higher in a few of parenchytmatous cells adjacent to phloem in tissue of pericycle, followed by cell divisions.

在生长素诱导24h后，可借助显微切片观察到下胚轴切面附近明显的解剖学变化：首先是中柱鞘内靠近韧皮部的薄壁细胞的细胞质与细胞核变浓，染色加深，部分细胞分裂；随后是分裂的细胞团增大，逐渐形成根原基并分化出根冠。

Cytoembryological studies were employed to reveal theorigin of haploid and to determine the cytological factersrelating to the production of diploid polyembryony withinone embryo sac occurring in natural population of apolyembryonic line SB-1 of O.sativa.

SB-1自然群体中的单倍体来源于助细胞无配子生殖。细胞胚胎学研究表明，卵器中的一个或两个助细胞能在受精之前发育成胚，其发生率分别为观察子房数的2.24%和1.75%。

AFGF shows greatpotential for clinical applications for therapy of a variety of diseases, such as Parkinson'sdisease, spinal cord contusion injury, neural regeneration in reimplantation of broken-offfinger, brain ischemia, renal ischemia, myocardial infarction, occlusive vascularitis, retinalischemia, gastric ulcer and nonhealing wound and so on. We expressed human acid fibroblast growth factor gene transiently in tobacco byAgro-bacterium mediated vacuum infiltration and studied the factors, which influenced theexpression level.

人类酸性成纤维细胞生长因子(aFGF，FGF-1)是成纤维细胞生长因子超家族成员，来自于三个胚层的多种细胞都可以表达aFGF.aFGF在治疗帕金森综合症、急性脊柱扭曲性损伤、断指中神经功能重建、脑缺血、肾缺血、心肌梗塞、闭塞性脉管炎、视网膜缺血、胃溃疡及难愈合性伤口等多种临床应用方面具有巨大潜力。

Embryonic stem cells derived from inner cell mass of mammalian blastocyst-stage emyst-stage embryos and primordial germ cells are totipotent cells that can be cultured in virto.

胚胎干细胞是从哺乳类动物的囊胚内细胞群或原始生殖嵴细胞分离、体外培养获得的具有发育全能性的细胞。

Basic fibroblast growth factor is a potent mitogen for a variety of mesoderm- and neuroectoderm-derived cells and has been found in aqueous humor, vitreous and other ocular tissues.

碱性成纤维细胞生长因子（basic fibroblast growth factor bFGF）是对广泛来源于中胚层和神经外胚层细胞的有效促细胞分裂因子，已在房水、玻璃体和其它眼组织中发现。

Methods Rat embryo dermal fibroblasts were cultivated on regenerated silk fibroin films in vitro adherently. The effect of regenerated silk fibroin films on morph, activity and growth of cells by viable cell counts and MTT colorimetric assay was observed.

采用静置贴壁培养法在再生丝素膜上体外培养鼠胚真皮层成纤维细胞，并用活细胞计数法及MTT比色法观察再生丝素膜对细胞的形态、功能和生长的影响。

Altogether, this study provides an induction protocol to obtain endodermal insulin-producing cell clusters and hepatocyte-like cells from mES cells.

综合以上所有结果，本实验提供了一个可从小鼠胚胎干细胞获得源自内胚层来的产生胰岛素的细胞和像肝细胞的细胞之诱导分化方法。

But soon some of the cells in the gastrula become specialized, a division of labor has set in among the cells which soon deprives them of the capacity to change their own structure and function back to the original state.

但一些细胞在原肠胚很快成为专门的，工作的分配已经设置在细胞之中，细胞很快剥夺他们自己的能力改变他们自己的结构和作用回到原始的状态。

Possibly RS cells are a kind of mesoblastic precursor cells, possessing better self- renewal and differentiation capacity.

RS 细胞较之mMSC细胞可能是一种更原始的中胚层前体细胞，具有更强的自我更新和分化潜能。

Fibroblast growth factor signaling guides mesodermal cell migration; however, we found some directed dorsal migration in an FGF receptor mutant, which suggests that additional signals are involved.

显微元细胞增长因子信号知道着中胚层的细胞迁移；但是，研究人员发现在突变FGF受体中存在着定向的背离迁移作用，这说明有更多的信号参与到了细胞的运动当中。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷