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Chromatin hetropycnote partly in spermatogonium, then become highly coacervate to form chromosome at the stage of spermatid and at last decondense at the stage of spermatozoon.

染色质在精原细胞中为部分异固缩,在精母细胞中高度凝聚为染色体,在精细胞及精子中为均匀非致密态。

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。

Thimerosal Induces DNA Breaks, Caspase-3 Activation, Membrane Damage, a n d Cell Death in Cultured Human Neurons a n d Fibroblasts

硫柳汞诱发DNA突变,激活Caspase-3,膜损伤,细胞死亡,在人类神经和纤维原细胞培养中的细胞死亡

Bax protein was expressed mainly in spermatogoni and primary spermatocytes, and sometimes the expression was also seen in spermatids and spermatozoa within some seminiferous tubules.

Bax蛋白主要表达于精原细胞和初级精母细胞,部分曲细精管中的精子细胞和精子也有表达。

Tumor types include Sertoli cell tumor, seminoma, and interstitial cell tumor.

种类类型包括:支持细胞瘤,精原细胞瘤和间质细胞肿瘤。

3Rhe distribution and change of proliferating cell nuclear antigen in seminiferous tubule: The positive staining of proliferating cell nuclear antigen was found in slices of all groups, the immunological positive products were located at karyon, usually in brown yellow granules, only a small part of them in diffuse state; the immunological positive cells were mainly the spermospores, besides a small quantity were spermiocyte, supporting the cell and myoid cell nuclear to be stained.

3增殖细胞核抗原在生精小管中的分布及变化:各组切片均可见增殖细胞核抗原阳性染色,免疫阳性产物位于细胞核,通常呈棕黄色颗粒,小部分呈弥散状;免疫阳性细胞主要是精原细胞,另外还有少量初级精母细胞、支持细胞和肌样细胞核着色。

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。

Under low temperature condition, fertility restoring, anther developing normally, the tetrads formed after archesporical cell, sporogenous cells and microspore mother cell. Subsequently, microspores were free from the tetrad of fertile anther and formed mature pollen grains, tapetumof the fertile anthers began to disintegrate and disappear at last.

在低温处理条件下,育性恢复,花药发育正常,经过孢原细胞期、造孢细胞期、花粉母细胞期后,可以顺利形成四分体,可育花药的四分体可以释放出小孢子并发育为成熟的花粉粒,同时绒毡层细胞开始解体,最后消失。

Cyclin B1 protein was expressed in mitotic spermatogonia and meiotic spermatocytes and was observed predominantly in round and elongated spermatids.

Cycln B1蛋白在进入分裂期的精原细胞和精母细胞中表达;在圆形精子细胞和伸长的精子细胞中呈现大量的cyclin B1蛋白。

Epithelial cells of hepatopancreas and midgut, and male and female reproductive system were not sensitive to the WSSB...

WSSBV对中肠和中肠育囊上皮细胞,肝胰腺上皮细胞,雄性生殖系统精原细胞,输精管上皮细胞等不敏感。

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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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。