查询词典 stem

The 1〓 generation of which is transfusion with mature cells, such as the whole blood and blood ingredient: the representative of the second generation is hematopoietic stem/progenitor cells transplantation, which can regraft normal hematopoiesis and immunity in a body with destroyed immunity and hematopoiesis by the self-renewal and multiple differentiation capacity of stem cells.

第一代细胞疗法是成熟血细胞的输注，如全血输注及成分输血等，对于纠正各种血细胞减少有明显疗效；第二代细胞疗法的代表是干细胞移植，指利用干细胞能够在体内自我更新和多向分化的能力在病态免疫和造血功能被摧毁的机体内重建正常的造血和免疫功能。

The critical nitrogen content in heading period was used to calculate the biggest accumulation quantity of nitrogen. The latent distribution index of leaf and stem, which was the variety heredity parameter, were used to distinguish the difference in nitrogen assignment in different varieties. The dynamic content of the nitrogen accumulation before anthesis could be described with a Richards model. The dynamic content of the nitrogen remobilization in leaf with leaf area index could be described with a power model, and the nitrogen absorption of grain from soil with dry weight could be described with a power model. The dynamic content of nitrogen density in stem and spike with physiological development time could be described with a nonlinear model.

模型利用抽穗期植株临界含氮量来表达氮素最大积累量，引入叶片潜在分配指数和茎鞘潜在分配指数2个品种遗传参数来区别不同品种在器官间的氮素分配差异，采用Richards方程来描述大麦花前氮素积累动态变化；采用指数函数方程来描述叶片氮的转移量随叶面积指数的动态变化以及籽粒从土壤中吸收的氮量随干物重的动态变化；采用非线性函数方程描述茎鞘和穗部的氮浓度随生理发育时间的动态变化。

Twenty-four mice were randomly divided into a liver repopulation model + stem cell transplantation group and a liver resection + stem cell transplantation group, with 12 mice in each group.

将24只小鼠随机分为2组：肝再生模型+干细胞移植组和肝切除+干细胞移植组，每组12只。

OBJECTIVE: To study the intrahepatic transplantation of embryonic stem cells-derived hepatic stem cells in therapeutic liver repopulation models, and to investigate the liver tissue replacement, growth and differentiation in vivo, and neoplastic formation.

目的：应用治疗性肝再生模型进行胚胎干细胞源性肝干细胞肝内移植，观察其在肝组织替代、体内的生长分化及成瘤性情况。

Straight stem; dark brown bark, long slit and long schistic spalling; wood with straight texture and thick structure; resin in the stem; tolerating wet condition.

马尾松树干较直；树皮深褐色，长纵裂，长片状剥落；木材纹理直，结构粗；含树脂，耐水湿。

We took young embryos, mature embryos, stem segments of tissue-cultured shoots, tender leaves and stem segments of adult trees as explants, two high effective in vitro culture systems of Sorbus pohuashanesis plants were established through adventitious shoot and axillary bud regeneration approaches for the first time.

我们以幼胚、成熟胚、无菌茎丛的茎段、成年树的嫩叶和茎段等为外植体，首次通过不定芽和腋芽增殖途径建立了两套高效、可靠的组培再生系统。

Spermatogonial stem cells have special behavior and features,based on these ,we can indentify the spermatogonial stem cell in vitro.

精原干细胞具有典型的生物学行为和特征，结合行为及生物学特征可对增殖的精原干细胞进行鉴定。

Objective:To study the biological features of mouse spermatogonial stem cells,in order to indentify spermatogonial stem cells and to realize the features in vitro.

目的：探讨培养状态下精原干细胞的生物学特征，为体外鉴定精原干细胞及认识精原干细胞在体内的生物学行为打下实验基础。

Objectives:To establish the culture system of spermatogonial stem cells in vitro;To study the mechanism of proto-oncogene c-src on the proliferation of rat spermatogonial stem cells.

目的：探索及完善精原干细胞的分离、鉴定和体外培养技术；研究原癌基因c-src在体外培养的大鼠精原干细胞中的表达及其与精原干细胞增殖相关的信号通路。

Objectives: To establish the culture system of spermatogonial stem cells in vitro; To study the effect of proto-oncogene c-src and the expression of caspase-3 gene on spermatogonial stem cells.

目的：探索及完善精原干细胞的分离、鉴定和体外培养技术；研究原癌基因c-src对体外培养的精原干细胞存活及与凋亡密切相关的caspase-3表达的影响。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。