性母细胞

To investigate whether the expression of cdc2 and cyclin B1 in spermatogenic cells during spermatogenesis is actually a temperature dependent event, in situ hybridization, Western blotting and immunohistochemistry analysis were used to study the expression of cdc2 and cyclin B1 in normal and cryptorchid testis. Results showed that heat would differentially hurt male germ cells in different developmental stages during spermatogenesis, especially the pachytene primary spermatocytes. Most of spermatogonia in contralateral cryptorchid testis were not harmed fatally by heat as yet, indicating that spermatogonia could resist to beat to a certain extent. In this case spermatogonia could develop to pachytene/diplotene primary spermatocytes, but they could not acquire the ability to complete the transition from mitosis to meiosis, and then appeared to go through apoptosis. Therefore, we could not find the descendants of meiosis: secondary spermatocytes and round spermatids, elongated spermatids and spermatozoon. The abdominal temperature had no significant influence on the transcription of cdc2 and cyclin B1 in the spermatogonia and pachytene/diplotene primary spermatocytes. In normal rabbit testis, cyclin B1 increased in the pachytene/diplotene primary spermatocytes before meiosis and reached its peak in the spermatids.

为了解精子正常发生过程中cdc2和cyclin B1表达的低温依赖性，我们利用原位杂交和免疫组化等方法，研究了正常和隐睾精子发生过程中cdc2和cyclin B1的转录和翻译调控活动，结果表明：（1）热对各阶段的雄性生殖细胞都有损害，粗线期的初级精母细胞尤为敏感，实验性隐睾内的精原细胞尚未完全受到"致命"影响，说明精原细胞对热有一定的耐受性，但即使成为粗线期／双线期初级精母细胞，却未能获得由有丝分裂过渡到减数分裂的能力，呈现不同程度的凋亡，所以在整个切片中找不到源自减数分裂的产物----次级精母细胞、圆形精子细胞，更谈不上长形精子细胞和精子的形成；（2）腹腔高温未明显地影响隐睾精原细胞和粗线期/双线期初级精母细胞中cyclinB1和cdc2的转录，说明高温并不是通过影响cyclin B1和cdc2的转录活动而导致生精过程阻断的；（3）正常兔睾丸组织中，〓在精原细胞和粗线期／双线期精母细胞中均有表达：cyclin B1蛋白在减数分裂前期的粗线期／双线期初级精母细胞中的表达量增加，于变态末期的精子细胞中达高峰。

Ova which are produced during oogenesis are generated in gonial cells of the female's ovaries.

在卵子发生过程中，由卵巢中的性母细胞产生。

There were the radicle polarity and the plumule polarity in differentiation of the first somatic embryogenesis.

此外，体细胞胚的发生和分裂是不同步的，往往在同一张切片上既可看到单个的胚性母细胞，又可见到二细胞、四细胞以致多细胞原胚并存的多样化原胚细胞群体。

The parameter of sphericity can be used to describe the similarity between centroblastic-centrocyte-centroblastic lymphoma cells and elips degree and regular form factor can describe the similarity between centroblastic-mantle-centroblastic lympoma cells.

圆球度可以用来描述中心母细胞--中心细胞--中心母细胞性淋巴瘤细胞之间的相似性；椭圆度、规化形状因子可以描述中心母细胞--套细胞--中心母细胞性淋巴瘤细胞之间的相似性。

The sperm originate in gonial cells in the walls of seminiferous tubules.

精子产生于输精管壁的性母细胞。

Results All the 7 cases were female, 2 cases were solitary fibrous tumor, 2 cases were myofibroblastoma, 1 case was inflammatory myofibroblastic tumour, 1 case was fibromatosis, and 1 case was low grade myofibroblastic sarcoma.

结果 7例患者均为女性，2例为孤立性纤维性肿瘤；2例为肌纤维母细胞瘤；1例为纤维瘤病；1例为炎性肌纤维母细胞瘤；1例为低度恶性肌纤维母细胞肉瘤。

Myoid/myofibroblastic areas in DFSP possibly represents the hyperplasia of stromal myofibroblasts, rather than true myofibroblastic differentiation of the neoplastic cells.

DFSP中的肌样／肌纤维母细胞性分化可能是肿瘤间质中肌纤维母细胞增生的结果，并非代表了瘤细胞的真性肌纤维母细胞性分化。

Results Myoid/myofibroblastic differentiation occurred most commonly in fibrosarcomatous DFSP. It was recognized histologically as peripherally distributed or randomly scattered small eosinophilic nodules or short bundles, which were composed of bland spindle cells, closely resembling smooth muscle cells or myofibroblasts.

结果 肌样／肌纤维母细胞性分化多出现在纤维肉瘤型DFSP中，表现为肿瘤周边部或肿瘤内散在性分布的深嗜伊红色小结节或短条束，由梭形细胞组成，细胞多无异型性，核分裂象也罕见，形态上似平滑肌细胞或肌纤维母细胞。

The results showed that the expression of calm3 and trm112l genes had no remarkable differences in oocytes and 8-cells stage embryos, but were significantly different in blastocysts. It was supposed that these two genes were possibly maternal genes, and they might be involved in oocyte maturation and zygotic genome activation.

结果显示，在卵母细胞和8细胞期胚胎，基因calm3和trm112l的表达量无显著性差异，而在囊胚期的表达量与前两个时期的表达量存在显著性差异，推测这两个基因在牛胚胎发育过程中的表达可能属于母型调控，提示该基因在卵母细胞成熟和合子基因激活中起一定作用。

The histopathologic changes included lymphocyte and monocyte infiltration,hyperplasia of synovial cells and small vessels,interstitial fibrosis,hyaline degeneration and cartilaginous metaplasia.The immunohistochemical observations showed that the high expressions of IL-1 and IL-6 were significantly different between the pathologic plicae and the control groups（P＜0.01）.The positive expressions of IL-1 and IL-6 were the synovial cells and monocyt-lymph cells in the pathologic synovial plicae.The positive expressions of MMP-1 and TIMP-1 have significant difference between the experiment and control group（P＜0.01,P＜0.05）.The expression of MMP-1 was positive in synovial lining cell,monocyte,fibroblast,endothelial cell in small vessel and chondrocyte.The TIMP-1 expression was detected in the synovial lining cells and a small quantity fibroblast.

结果 正常滑膜皱襞和病理性滑膜皱襞在滑膜细胞增生及小血管增生、间质纤维化及玻璃样变、软骨化生组织学改变方面，差异均有显著性（P＜0.01）；IL-1、IL-6在病理性滑膜皱襞内的增生滑膜细胞、单核及淋巴细胞和在正常滑膜皱襞内的表达差异均有显著性（P＜0.01）； MMP-1、TIMP-1在病理性滑膜皱襞和正常皱襞内的阳性表达，差异具有显著性（P＜0.01，P＜0.05），MMP-1在增生滑膜衬里层细胞、单核和纤维母细胞、血管内皮细胞和软骨化生的软骨细胞呈阳性表达；TIMP-1只在滑膜衬里层细胞和少量纤维母细胞有表达。

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。