细胞器官

In this species, the first division of zygote produces two equal hemispheric cells by the first partition wall at the right angles to the axis of the archegonium.

合子的第一次分裂面垂直于颈卵器的长轴，产生两个相等的子细胞，靠近颈卵器颈部的营养器官原始细胞和远离颈部的基足原始细胞。

The microstructure changes were mainly vasodilation and hyperemia in those organs,especially in the lung.The heart,liver,kidney,pancreas and cerebrum appeared different degree denaturation and a few lymphocyte and monocyte infiltration;but the lymphocytes in the immune-organ spleen and burse decreased.

结果如下：1。显微结构变化主要表现为：各器官的血管扩张、充血，以肺脏尤为严重，并见少量淋巴单核细胞浸润，同时心、肝、肾、胰和大脑均呈现不同程度的变性；而免疫器官脾、法氏囊则主要表现为淋巴细胞数量减少。

Type A band was detected in nearly all the organs and tissues,when coat color chimerism was over 85%, indicated the ES cellhas a fairly high potential to differentiate into cells of endoderm, mesoderm and ectoderm,In addition, only type A band was observed in the muscles of 6 mice which coat color chimerism is over 85%,the results indicated that these muscles were differentiated only from ES cells.

当毛色嵌合率大于85%时，几乎所有的器官组织都检测到A型条带，显示了ES细胞在发育形成内、中、外胚层的细胞方面具有很高的分化潜能。另外，在毛色嵌合率大于85%的其中的6只嵌合鼠的肌肉中，只观察到A型的条带，表明这些肌肉只单独来源于ES细胞。

The development of anther and ovule followed the finish of the flower organ initiation. Pollen mother cells and well developed microsporagium wall occurred when the diameter of the bud reached about 3.0 mm, and the archesporial cell which played the role of megaspore mother cell formed in ovule when the diameter of the bud reached about 3.5 mm.

花药及胚珠的发育与花器官的形态发生之间有明显的连续性，当花蕾直径为3.0 mm左右时花粉母细胞及完整的花粉囊壁形成，直径达到3.5 mm左右时胚珠中出现孢原细胞的分化，它直接起大孢子母细胞的功能。

The book provides reviews on many of the areas of stem cell, such as organ repair and regeneration; transcriptional regulation of blood stem cells; stem cells and tissue engineering; human fetal mesenchymal stem cells; gene-modified mesenchymal stem cells as cytoreagents for regenerative therapy ; pharmacological characterization of embryonic stem cell-derived cardiomyoctye cultures; adult stem cells in cardiac cellular transplantation; pancreas and liver regeneration and neogenesis; and stem cells and clinical application so on.

该书提供了干细胞许多领域的评论，例如器官修复和再生；血液干细胞的转录调控；干细胞和组织工程；人类胎儿间质干细胞；基因修饰的间质干细胞作为再生治疗的细胞试剂；胚胎干细胞来源的心脏肌细胞培养物的药理学特征；成熟干细胞在心脏细胞移植中的作用；胰腺和肝脏再生；以及干细胞及期临床应用等。

The developing tooth is a particularly good model for studies on the regulation of organogenesis, including morphogenesis as well as cell differentiation.

脊椎动物器官在发育过程中的形态发生和细胞分化都是由上皮细胞和外胚间充质细胞的相互作用所调控的。

As a result of particularity growth of mammary gland, the relations between dysdifferentiation and breast tumor, Mammary gland was an extremely appropriate model to study the organogeny, the cell differentiation and the organ reparative regeneration.

由于乳腺自身发育的特殊性，以及异常分化与乳腺肿瘤的关系，乳腺是研究器官发生、细胞分化、器官修复再生等机理非常合适的模型。

Objective: The modern medical research thought that the cerebral ischemia- reperfusion injury is an important pathophsiology mechanism that causes the various cerebral disease,and apoptosis is one of the important mechanisms of the cell death in the process of the organ and the organization ischemia-reperfution.

目的：现代医学研究认为缺血再灌注损伤是大多数急性缺血性疾病的主要病理生理过程，而细胞凋亡则是器官、组织缺血再灌注损伤过程中细胞死亡的重要机制之一，因此干预细胞凋亡，从而防治缺血再灌注损伤已经引起国内外广泛关注。

Results The choroid plexus, hypophysis, area postrema and pineal body, namely, circumventricular organs and ependyma as well as pia mater layers were stained by the HRP reaction products.The HRP reaction products were observed in the tissue space of membrane mucosa nasi, around the fila olfactoria and venules, and within the venules under the light microscopy and electron microscopy, also. Scintillation count showed that the radioactivity of the CVOs was higher than that of the background. The radioautography showed that the scattered grains of silver existed within the cells of neurocyte layer also.

结果 在脑室周围器官及脑室周围室管膜、软脑膜层有HRP反应产物的聚集，在鼻中隔的鼻粘膜下组织间隙、嗅丝周围间隙及静脉周围和管腔内也可见到HRP反应产物；液闪计数显示，大白鼠的脉络丛、脑垂体、最后区、松果体等脑室周围器官放射性活度明显高于本底；放射自显影显示大白鼠脑组织神经层细胞内有散在分布的银颗粒。

The traits of dedifferentiation and redifferentiation of the explants form H. sampsonii show that the calli the stem and leaf usually form buds at its parietal cells. In the presence of auxin, the parenchyma of the leaf gap at the node is initiated firstly, then, develops blastemata that form buds in a cluster on the node without callus. These show that the various parts ofthe herb differ greatly in cell initiation and organ differentiation.

研究元宝草外植体的脱分化和再分化的特点结果表明，茎段和叶片启动形成愈伤组织，其不定芽通常发生在愈伤组织的周边区，茎节叶腋的叶隙薄壁组织在激素的诱导下启动、分裂，不形成愈伤组织而直接器官分化成芽原基，并在节结处产生一圈成簇的不定芽，表明元宝草不同部位的细胞启动及器官分化调控存在差异。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。