查询词典 x chromosome

In the embryo, Nanog specifically demarcates the nascent epiblast, coincident with the domain of X chromosome reprogramming.

如果没有它，胚胎干细胞将不会发育，而诱导产生多功能干细胞的过程也会失败。

Here we show reprogramming of advanced epiblast cells from embryonic day 5.5–7.5 mouse embryos with uniform expression of N-cadherin and inactive X chromosome to ES-cell-like cells in response to LIF–STAT3 signalling.

李喜和与剑桥大学合作开展的这项研究，首先是对着床后5.5—7.5天小鼠外胚层细胞诱导培养过程中关于LIF因子作用的重新认识。

The analysis of these data shows that in the process of evolution the X chromosomes are as conservative as those in other mammals and the intraspecific and interspecific changes of autosomes follow such a rule:the increase of one chromosome in 2n number is always accompanied by the increase of two acrocentrics and the decrease of one metacentric or submetacentric,and vice versa.

对这些材料所进行的分析表明，鹿属动物在进化过程中，X染色体是很保守的，而常染色体的变化，无论是种间还是种内，全是2n数每增加1条，中部或亚中部着丝点染色体数就减少1条，而端着丝点染色体数就增加2条，反之亦然。

Individuals with one X and no Y chromosome are phenotypically females but have a group of physical abnormalities including dwarfism and failure of ovarian development known as Turner's syndrome.

含有一个X而无Y染色体的患者表型为女性，但有一组机体异常表现，包括侏儒郑和卵巢不发育，称为Turner综合症。

Methods Amniocenteses were performed in 34 pregnant women of 16～23 gestational weeks with indications for prenatal diagnosis. The amniotic fluid samples were cultured in Chang's medium. The metaphase chromosomes were hybridized insitu with the human centromere probes,α-satellites DNA probes of X, Y,13, 21, 18 chromosomes and all primer chromosome probes. These probes were conjugated by Biotin and Dioxin then. The treated slides were examined and taken photos under the fluoromicroscope.

对34例孕16～23周有产前诊断指征者经腹部抽取羊水，用Chang培养液传代培养，常规制备羊水细胞分裂中期染色体，应用生物素及地高辛标记的人类全着丝粒探针和X、Y、13、21、18号染色体α-着丝粒探针及染色体全涂染探针，与培养的羊水细胞分裂中期染色体DNA进行原位杂交，杂交后用荧光显微镜观察玻片并摄像。

Objective To search for agene predisposing to schizophreniaon chromosome X in the Han nationality of Chinese,toexplore the relationship between DXS1113 polymorphism with SP and feature of thegenetics.

目的 搜寻中国汉族人X染色体的精神分裂症易患性基因，分析DXS1113多态性与SP相关性及遗传学特征。

Thirty six homologous Pairs of chromosomes were autosomes, in which chromosomes, Pairs of 1 to 8 were metacentric.9 to 36 . And X was metacetric, Y chromosome terminal.

其中，1—8对常染色体为中间着丝粒染色体，9-36对常染色体为端部着丝粒染色体，X为中着丝粒染色体，Y为最小的为端部着丝粒染色体。

The results of measuring chromosome and one-way ANOVA analysis showed that the relative length of all autosomes was different among the sheep breeds.The X chromosomes were similar and the Y chromosomes were different not only in relative length p

测量染色体长度，计算相对长度，并进行单因素方差分析表明，绵羊各常染色体的相对长度之间存在一定的差异；对性染色体进行Duncan′s 多重比较，种群间X 染色体差异较小；Y 染色体种群间不但存在形态差异，且在相对长度上差异极显著P

This study investigated endothelial chimerism and its influential factors with X and Y chromosome probes by fluorescence in situ hybridization.

使用X，Y染色体探针通过荧光原位杂交法观察移植肾中血管内皮细胞被受体内皮细胞替代的情况，并分析内皮细胞替代的影响因素。

Chromosome mutations can occur naturally but their frequency is increased by the effect of x-rays and chemical mutagens.

染色体的突变是自然发生的，但通过 X 射线或化学诱变剂可以增加突变的频率。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐