生殖细胞

Four different pathways of androgenesis have been observed:Pathway of vege...

在雄核发育的研究中，观察到有营养细胞发育途径，生殖细胞发育途径，营养细胞和生殖细胞混合发育途径，以及均等分裂发育途径等四种类型，并对这四种途径进行了讨论。

An asexually produced reproductive cell, such as a zeospore, found in certain algae.

无性生殖细胞无性生殖细胞，存在于一些藻类植物里

It is much fast than sexual reproduction because it does not include the process of forming a gametocyte.

而合子是由亲本产生有性生殖细胞，经过两性生殖细胞的结合，成为合子。

In L. davidii, the male plastids were stripped off during the division of microspore.

在生殖细胞的发育过程中，质体发生解体，到成熟花粉的生殖细胞只含线粒体，没有质体。

The results show that, with the maturity of the gonad, the undifferentiated germ cell divided and differentiated to smaller oogonium or spermatogonia, and the oogonium or spermatogonia transformed to oocyte and sperm undergoing a series of maturation process.

摘 要 通过观察栉江珧的未分化生殖细胞，精原细胞和卵原细胞，精母细胞和卵母细胞，精子和卵子的形态结构与分布状况及核仁在卵成熟过程中的变化，对栉江珧生殖细胞发生及成熟过程的有关问题进行了探讨。

There was not any distinct difference in flourrescence density between the experimental and control silkworms under the ultra-violet light in both of the 2 experiments; and with the excitation of ultra-violet ray, the germline cells of experimental silkworms in the experiment of 2002 emitted green fluorescence while the control did not.

紫外灯荧光检测，2次实验都未看到实验组与对照组家蚕间有显著差异，而2002年实验取家蚕4龄幼虫生殖细胞观察，有部分实验家蚤的生殖细胞在紫外光下发绿色荧光。

Polar distribution of Con A receptors was observed on the plasma membrane of unfertilized egg cells and central cells.

在蚕豆和莺尾的生殖细胞表面均有这三种凝集素的受体。在朱顶红生殖细胞表面有前两种凝集素的受体，分布比较均一，但是没有大豆凝集素的受体。

Objective: To optimize the culture system of hEGcs in vitro, select the hEGcs from subculture to transplant directly to the rat infarcted myocardium and observe the therapeutic mechanism of their heterotransplantation in the treatment for the rat myocardial infarction.

目的：优化人胚胎生殖细胞的体外培养体系，并将生长状态良好的传代的人EG细胞移植用于大鼠心肌梗死模型的治疗，探讨人胚胎生殖细胞进行异种移植对大鼠心肌梗死的治疗机制。

The five kinds of male germ cell cytogenetic assays used to detect genotoxicity of ani-mal drugs to each spermatogenetic stage of male germ cells,such as spermatogonia, primary spermatocytes, secondary spermatocytes,spermatids and spermatozoa,had beensystematically studied.

本文系统地研究了适合我国国情的检测兽药对哺乳动物精原细胞、初级精母细胞、次级精母细胞、精细胞和精子等各个发生阶段雄性生殖细胞遗传毒性的5种测定方法，并首次为国产阿维菌素安全性毒理学评价提供了系统的雄性生殖细胞遗传毒性资料。

ABSTRACT Objective To discuss the clinical pathologic features and differential diagnosis of mixed germ cell sex cord stromal tumorwith malignant variant of germ cell tumor Methods The clinical pathologic datum and immunophenotype were studied in the case of ovary MGCSCST with malignant variance of germ cell tumor Results The patient's genital anatomy and female phenotype were normal,karotypes was 46xx with uterogestation The tumor tissue consisted of mixed germ cells and sex cord stromal cells with evident malignancy of mixed germ cells There was no atypical structure of gonadoblastoma in tumor tissue Conclusion MGCSCSST has complex morphosis,thus,to prevent misdiagnosis,more samples should be collected and more slices be cut The patient may have prognosis malo when there are high malignant variants of mixed germ cells in tumor tissue

目的 探讨混合性生殖细胞性索间质肿瘤(mixed germ cell sex cord stromal tumor，MGCSCST)伴恶性生殖细胞肿瘤变异型的临床病理特点及鉴别诊断。方法卵巢MGCSCST伴恶性生殖细胞肿瘤变异型的病例进行临床病理特征和免疫表型分析。结果患者生殖器的解剖结构和女性表型正常，染色体组型是46xx，足月妊娠。肿瘤组织由混合性生殖细胞和性索间质肿瘤构成，混合性生殖细胞有显著的恶性特征。瘤组织中没有典型的性腺母细胞瘤结构。结论 MGCSCST有复杂的形态结构，因此更多的取材和切片可以防止误诊，当肿瘤组织中的混合性生殖细胞有高度恶性变异时，患者预后不良。卵巢肿瘤；生殖细胞性索间质肿瘤；免疫组织化学

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。