查询词典 spermatogonium

Objective To observe effect of selenium on the protein P16 expression in the testicle spermatogonium of rat borne with colon cancer induced by azoxymethane.

目的观察硒对氧化偶氮甲烷所致结肠癌大鼠睾丸精原细胞P16蛋白表达的影响。

This dissertation studied the isolation, purification, culture system optimization and transplantation techniques of goat spermatogonium in vitro respectively to construct an optimized long term culture system to facilitate in vitro manipulate studies for future.

十年来小鼠精原干细胞培养和移植探索的不断完善，为各种哺乳动物及人类精原干细胞培养体系的建立和移植实验提供了新的思路和技术平台。

Typical rough endoplasmic reticulum were not seen during the process of spermatogenesis, only vesicular RER appeared and smooth endoplasmic reticulum only presented at spermatogonium stage.

精子发生的全过程中，未见典型的粗面内质网，仅见泡状粗面内质网；滑面内质网只在精原细胞期出现。

The histosection of ram testes about 2-3 month old were made and observed, the morphology of germ cells were uniform in seminiferous tubules and did not enter the spermatogenesis. We have found a lot of PGP9.5 positive spermatogonium on basal membrane and it could be used culture in vitro.

对2~3月龄的山羊睾丸做切片观察，发现曲细精管中细胞形态比较单一，生精上皮还没有进入生精周期，通过免疫组化染色发现在曲细精管基底膜有大量PGP9.5 精原干细胞。

Puberty when the hypothalamus pituitary development formed to stimulate the beginning of testicular gonadal hormone secretion, so that in the vas deferens spermatogonium split into spermatocytes, and then split into sperm cells, sperm cells eventually split into sperm.

青春期时，丘脑下部垂体的发育形成了，刺激睾丸性腺开始分泌性激素，使输精管里的精原细胞分裂成精母细胞，再分裂成精子细胞，最终精子细胞分裂成精子。

Keywords Selenium;Azoxymethane;Spermatogonium;Protein p16;Colon cancer;Rats

硒； 氧化偶氮甲烷；精原细胞； P16蛋白；结肠癌；大鼠

The spermatogenesis includes five stages: spermatogonium、primary spermatocyte、secondary spermaticyte、spermatid and spermatozoon.

雄体的生殖细胞发生经历精原细胞、初级精母细胞、次级精母细胞、精子细胞和成熟精子五个时期。

Conclu sion:(1)Surface densities of PCNApositive cells reached their peaks on 14th day after birth,but the number of apoptotic cells reached its peaks on 21st day p ostnatal,so the apoptotic peak was late the proliferating peak for a week,and related to the particular period in cycle of seminiferous epithelium;(2)The spe rmatogium were found move from center to the periphery of the seminiferous tubule and arrange disorder to order;(3)The spermatogonium remained replicating activ ity of DNA during the developing stage.

生精细胞凋亡的高峰要滞后其增殖峰1周左右，而且与其所处生精周期的特定阶段有关；（2）精原细胞在胚胎发育过程中向曲细精管周边迁移，其排列由无序到有序；（3）在生后各发育阶段中，精原细胞始终保持DNA复制的能力。

The spermatogenesis of Solen grandis included five stages: spermatogonium, spermatocyteⅠ, spermatocyteⅡ, spermatid and spermatozoon.

大竹蛏精子发生历经精原细胞、初级精母细胞、次级精母细胞、精细胞和成熟精子5个阶段。

The spermatogonium puirity (including the PGP9.5 cells and the c-kit cells) to achieved above 82% by percoll density of 27-35% and panning method and PGP9.5 cells were (63.6±3.2)% and (71.9±4.1)% respectively.

通过收集27~35%Percoll梯度间的细胞或盘化法纯化后，回收精原细胞纯度(包括PGP9.5 和c-kit 细胞)均达到82%以上，其中PGP9.5 细胞分别占(63.6±3.2)%和(71.9±4.1)%，而c-kit 分别占(21.2±1.8)%和(11.5±0.8)%。

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