细胞发生

Chapter Ⅱ Xenopus Tbx6 Mediates Presomatic Mesoderm Cell Adhesion during Somitogenesis As a member of T-box gene family, Tbx6 is involved in somite cell fate decision and endows adhesion properties to mesoderm cells.

第二章 xTbx6在体节发生过程中介导了预定体节中胚层的粘连 xTbx6是T-box转录调控因子家族的成员，xTbx6参与体节细胞命运决定和赋予旁侧中胚层细胞特定的粘连特性。

In male, the immunopositive reaction in spermatogonia, spermatocyte and spermatid to testosterone antibodies strengthened gradually during the development and maturation of testis.

在大生长期和成熟期，精原细胞和精母细胞对孕酮抗体发生强的免疫阳性反应。

Cholesterol contributes to the generation and development of atherosclerosis while non sterol isoprenoids play a role in regulation of cell proliferation, signal transduction and ge...

胆固醇在动脉粥样硬化的发生、发展中起重要作用，而异戊二烯则参与细胞增殖调节、信号转导及肿瘤发生过程。目前，该酶已成为一些有效的抗动脉粥样硬化药物治疗的靶点。

Bamboo variation ofmicrodensity of all age-degree and all height bamboo from bamboo green tobamboo yellow as follows:The downtrend ladder of microdensity the firststage from bamboo green to bamboo yellow is relatively large,normally at theplace 0.35 from bamboo hull(the thickness of from bamboo hull to bambooyellow is 1)micro-density downtrend ladder begin to get smaller,variancerange of microdensity is smaller.When reaching near bamboo yellow area,microdensity reaches its minimum value,and when reaching bamboo yellowsection density increase rapidly,the minimum density of bamboo is only 50% orless of maximum density.Bamboo yellow is comprised of stone cells whichhave thick cell wall,so its density is high,normally 50% to 100% more thanminimum density.Bamboo yellow′s lay thickness is thin,normally the samethickness for all age-degree and all height bamboo,about 0.8mm.From 1 age-degree bamboo to 2 age-degree bamboo during growth,the increase of averagedensity is mainly in bamboo pulp section,from 3 age-degree bamboo to 4 age-degree bamboo,the decrease of average density is mainly decrease in the pulpsection.Same age,same height,the less the density ladder of bamboo radialthickness,the higher the mechanical strength.

所有年龄所有高度的竹材微密度从竹青到竹黄对材性变异规律如下：从竹青到竹黄开始下降梯度较大，一般到相对竹皮距离0.35左右处(整个竹壁厚度为1)，竹材微密度下降梯度减小，微密度的变化范围变小，到近竹黄处，微密度达最小值，而后到竹黄部位密度大幅上升，竹材最小密度一般只有最大密度的50％或更低，竹黄由厚壁的石细胞组成，所以密度较大，一般比最小密度增大约50％-100％，厚度较薄，不同年龄不同高度竹材的竹黄厚度相差无几，约在0.8mm左右；竹材从1度竹到2度竹生长过程中，平均密度的增长主要发生在竹肉部分，从3度竹到4度竹生长过程中，平均密度的下降主要发生在竹肉部分，同一年龄同一高度，竹壁厚径向的密度梯度越小，力学强度越高，随着年龄的增大，密度梯度越来越小(1度竹除外)，随着高度增加，密度梯度越来越大。

However, there were not statistically difference in cdk2 and cdk4 expressions between stroma of BPH and PC.

cdk2和cdk4异常表达参与BPH和PC的发生发展过程，其可能是通过改变细胞周期及促进细胞异常增殖而起作用的。

For "Allstar", cyto-histological observations suggested that adventitous shoots originated from epidermal or subepidermal cells near vascular tissue.

细胞组织学观察表明，对于草莓品种全明星，芽原基多发生于距离维管束较近的表皮或亚表皮细胞处。

The salivary gland malignant tumor which mostly originates from salivary gland epithelial tissue may occur in large salivary glands such as parotid gland, submaxillary gland, sublingual gland and minor salivary glands like palate gland and so on.

涎腺恶性肿瘤多为涎腺上皮组织来源的恶性肿瘤，可发生于大涎腺如腮腺、颌下腺和舌下腺，也可发生于小涎腺如腭腺等，具有组织分型多、细胞成分复杂等特点。

Formate the virus after invading cells, cause host ' s cell ' s supersession to change, biosynthesis does not control by oneself again, make between nucleic acid and a large amount of protein of virus synthetic.

3：合成病毒侵入细胞之后，引起宿主细胞代谢发生改变，生物合成不再由自身支配，使病毒的核酸和蛋白质大量的合成。

HP infection activates oncogene and inactivates tumor suppresser gene an d increase overexpression of P21,P53,C-myc and C-erbB-2,which may be involved in development of gastric cancer.

Hp感染与胃癌中P21、P53、C-myc及C-erbB-2的异常表达密切相关，提示Hp感染可使胃粘膜细胞的癌基因活化和抑癌基因突变或失活，促进胃粘膜细胞恶性转化而导致胃癌发生。

Attacked by surface active agent, ocean micro-alga will be change their coloring matter for photosynthesis under the contamination of surface active agent, to result much phaeophytin-a.In addition, have assayed the surface property of the four kinds of surface-active agent.

在此基础上初步研究了表面活性剂对海洋微藻的毒性机理，找到了表面活性剂对海洋微藻细胞的攻击点是藻类的细胞膜，并且胁迫状态下的藻类细胞的光合色素组成发生变化，产生大量的脱镁叶绿素a，影响藻类的光合作用效率。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。