精细胞

随着精细胞的延长，CA的形状也跟着转变和伸长。

Following the spermatid elongation , the shape of CA is progressively transformed and extended .

250&300染色质纤维沿精细胞长纵轴连接在CA结构的基部。

The 250-300 A chromatin fibers along the longitudinal axis of the spermatid are attached to the base of CA structure .

锰对大鼠生精细胞半胱氨酰天冬氨酸酶-3和细胞色素C表达的影响

Effects of Manganese on the Expression of Caspase-3 and Cytochrome-c in Spermatogenic Cells of Rats

结扎组生精细胞PCNA增殖指数（PI）明显低于对照组（P

PCNA-index ( PI ) in the high ligation groups were much lower than the control groups ( P

输精管复通对生精细胞中Bcl-2及Bax基因蛋白表达的影响

Effect of Vasostomy on Expression of Bcl-2 and Bax Gene in Rat Spermatogenic Cells

结果：UU感染组中生精细胞凋亡率明显高于正常对照组（P＜0.01）。

Results : Apoptosis rate of infective group of UU was significantly higher than that of normal group .

Fas及FasL表达对大鼠睾丸局部热作用生精细胞凋亡的影响

Fas / FasL Expression and Spermatogenic Cell Apoptosis in Rat with Local Testicular Heating

睾丸扭转后生精细胞凋亡与iNOS基因表达

Testicular torsion / detorsion induced germ cell apoptosis and expression of gene iNOS

Caspase-3与生精细胞凋亡关系的研究

The relationship between caspase-3 and spermatogenic cell apoptosis

结论大鼠睾丸扭转后生精细胞p53基因表达和Caspase-3增加与生精细胞凋亡增加有关。

Conclusion The germ cell apoptosis is asso-ciated with expression of p53 and caspase-3 after testicular torsion in rats .

光镜和电镜检查均未发现MF会引起心肌病变，但睾丸严重萎缩，造精细胞明显减少。

However their testes showed serious atrophy and the number of spermatogenic cells reduced significantly .

结论：衰老大鼠睾丸生精细胞p53基因表达上调，睾丸功能减退。

Conclusions : The p53 gene expression of spermatogenic cells in testis of aging rats increased , and the function of testis decline .

精细胞后期和成熟精子中，MTmRNA集中在顶体管以及顶体和杯状核之间的狭带中。

At the late spermatids and spermatozoa , MT mRNA localizes in the acrosomal tubule and the narrow band between cup-like nucleus and acrosome .

Percoll密度梯度离心分离不同发育阶段生精细胞的方法

Separation of Mouse Spermatogenic Cells by Centrifugation in Percoll Density Gradients

大鼠单侧隐睾对侧睾丸生精细胞凋亡与T-AOC、MDA和Bcl-2基因表达的关系

Effect of T-AOC , MDA , BcL-2 on the Germ Cell Apoptosis in the Contralateral Testes of Unilateral Cryptorchidism in Rats

隐睾生精细胞ALR表达及其作用机制研究

The Expression and Function Investigation of ALR in Cryptorchid Testis Germ Cells

E染色观察睾丸组织的形态等变化。提取生精细胞凋亡DNA，用琼脂糖凝胶电泳检测其凋亡特征性梯状带。

Apoptotic DNA of spermatogenic cells was extracted from the testicles , then was detected apoptotic DNA ladder formation by agarose gel electrophoresis and apoptosis rate of spermatogenic cells by TUNEL method quantitatively .

结论：小鼠汞暴露可导致睾丸生精细胞Bcl-2、Bax蛋白表达阳性细胞率和平均光密度值显著性改变，生精细胞和精子超微结构发生明显的变化。

CONCLUSION : Mercury exposure caused abnormal Bcl-2 and Bax protein expression , average optical density change and ultrastructural changes in spermatogenic cells and sperms .

褪黑激素对小鼠睾丸生精细胞凋亡和睾丸间质细胞nNOS表达的影响

Effect of melatonin on apoptosis of spermatogenic cells and expression of nNOS in testis of mice

目的研究镉暴露对小鼠睾丸生精细胞DNA的损伤作用、bcl2和Bax蛋白表达率及超微结构的变化。

Objective To study DNA damage , Bcl-2 and Bax expression , and ultrastructure change in spermatogenic cell of mice by cadmium exposure .

TGFβ3仅表达于Leydig细胞，各级生精细胞未见表达。

TGF β 3 was only expressed in the cytoplasm of Leydig cells and there was no positive expression in seminiferous epithelium ;

Tunel结果提示TSEG-3过表达可能诱导生精细胞的凋亡。

Tunel results suggest TSEG-3 overexpression may induce germ cell apoptosis .

镉对Bcl-2、Bax表达水平的改变可能是生精细胞凋亡的分子机制之一。

The change of expression level of Bcl - 2 , Bax induced by cadmium would be one of the possible mechanism for apoptosis in spermatogenic cell .

支持细胞为生精细胞提供结构支架和营养，支持细胞分泌的细胞因子（如IL-1α和IL-6）可能涉及精子发生的局部调控。

Sertoli cells provide structural support and nutrition for germ cells . IL-1 α and IL-6 secreted by Sertoli cells were probably involved in the local control of spermatogenesis .

作者认为，精子为含有极少胞质的高度特异化的细胞，要从分子水平上探讨CaM与男性不育的关系，需从研究各级生精细胞着手。

Germ cells in different stages should be studied in order to discuss the relationship between CaM and male sterility on molecular level , as spermatozoa is the high specialized cell with very few cytoplasm .

抑制素B水平反映了整个睾丸组织的功能，是输精管道的直接产物，成年男性血清中维持可检测的抑制素B水平需要生精细胞的存在，因此抑制素B被认为是男性精子发生的血清标志物。

The inhibin B is a direct product of the seminiferous tubules , reflecting the total testicular tissue . The measurable inhibin B production in adult requires the presence of germ cells . Inhibin B is regarded as a serum marker of spermatogenesis .

MDA含量则高于LBP组，最佳剂量为LBP10mg·kg-1·d-1；LBP能降低高温引起的生精细胞损伤、促进睾丸生殖细胞正常发育。

The optimal dose is LBP 10mg · kg-1 · d-1.LBP could protect the spermatogenic cells and promote the normal development of testicle germ cells .

目的：研究生精细胞生长因子（SGF）提取纯化方法。

Objective : Methodological Study on Purification and abstract of Sperm-growth factors ( SGF ) .

棉酚对鼠类生精细胞LDH-X活性的影响

The Effect of Gossypol on the Activity of LDH-X in Mice and Rats In vivo

结果大剂量中药碘使睾丸组织生精细胞数减少，睾丸组织中睾酮低表达，bcl-2基因低表达、bcl/xs基因高表达。

RESULTS The large dosage herbal iodine could desease the number of sperm cells , expression of bcl-2 gene , expression of testosterone , increase the expression of bcl-xs / 1 gene in rat testicular tissue .