精原细胞

黄颡鱼除A1型精原细胞外的各期生殖细胞都存在拟染色体，并且随着细胞的不断发育拟染色体逐渐变小分散，最后在精子内完全消失。

Each germ cell had chromatoid body except for the spermatogonium of Al type , and the chromatoid body became small and dispersed with the cell developing constantly , disappearing completely in the sperm .

采用连续切片技术，研究了15～45期（孵化50h～19d）鸡早期胚胎发育过程中精原细胞与睾丸发生发育的关系。

Chicken embryos from stage 15 to stage 45 were studied by means of serial section and light microscopy in order to learn the relationship between the spermatogonium and the testicular development in the early chicken embryo .

通常有以下几种组织学构成：精原细胞瘤、胚胎癌、畸胎瘤、绒毛膜癌

They often have several histologic components : seminoma , embryonal carcinoma , teratoma , choriocarcinoma .

精原细胞对丝裂霉素C高度敏感。

Spermatogonia are highly sensitive to mitomycin C.

丙烯腈对蝾螈睾丸精原细胞DNA的诱导损伤

DNA Damage on Newt Testicle Spermatogonia Induced by Acrylonitrile

未降睾丸并精原细胞瘤的MRI诊断

Replantation of Amputated Testicle MRI Diagnosis of Seminoma of Undescended Testes

应用酪氨酸蛋白激酶（CKIT）免疫化学鉴定精原细胞。

Spermatogonium was identified by c-kit ( tyrosine protein kinase ) immunochemistry .

目的探讨未降睾丸并精原细胞瘤的MRI特点，以期提高对本病的认识。

Objective To study the MRI features of seminoma of undescended testes .

~（60）Co腹部移动条照射治疗17例睾丸精原细胞瘤淋巴结转移

Whole abdominal moving strip technique for retroperitoneal lymph node metastases of seminoma of the testes

精原细胞瘤中AR、ERα、PR和CT基因的表达研究

Expression of AR 、 ER α、 PR and CT Gene in Seminoma

精原细胞表达特异的CKIT受体。

Spermatogonia expressed specific c-kit receptor .

用聚合酶链反应方法检测人睾丸精原细胞瘤中的P53基因突变

P53 Gene Mutations in Human Seminomas Screened by Using Polymerase Chain Reaction Technique

人类睾丸精原细胞瘤组织中P（53）基因突变和Rb基因蛋白产物表达的缺失

Loss of Rb gene protein expression and P_ ( 53 ) gene mutation in human testicular seminoma

~（134）Cs在小鼠睾丸的滞留过程及其诱发精原细胞染色体畸变

Effect of chromosome aberrations in spermatogonia induced by 134 CS retention in germ cells

HCG和（或）β-HCG在睾丸精原细胞瘤中的价值

The Prognostic Value of HCG / β - HCG in Seminoma

目的：分析Ⅰ、ⅡA/ⅡB期单纯精原细胞瘤的远期治疗效果并探讨其治疗策略。

Objective : To analyze the long-term results of Stage ⅰ and ⅱ _A / ⅱ _B testicular seminoma . and discuss the strategies of treatment .

Fas在正常睾丸组织及精原细胞瘤中的表达

Expression of Fas in Normal Testis and Seminoma

性原细胞和精原细胞均表达AP活性，部分精母细胞也表达AP活性。

Gonocytes and spermatogonia all expressed AP activities . Some of spermatocytes expressed AP activity .

结果提示P53基因的突变和人类睾丸精原细胞瘤的发生有关。

The present study suggests that mutation of P53 gene is involved in the development of human testicular seminoma .

此外，在雄性动物，精原细胞减数分裂早期也存在着短暂的X染色体失活现象。

In addition , in males , the X chromosome is inactivated together with Y chromosome in spermatogenic cells shortly before or during early meiotic prophase .

大鼠Sertoli细胞与精原细胞的分离及共培养

Separation and co-culture of Sertoli cells and spermatogonial cells from rat testis

目的：探索以精原细胞作为载体建立带乙肝病毒X基因的树鼩转基因动物模型的可行性。

Objective : To investigate the possibility of using the spermatogonial cells as a vector to establish trans-gene animal model of tree shrew with HBV X gene .

甲基汞对小鼠精原细胞SCE的影响

Influence of Methylmercury on SCE of Spermatogonia of Mice

IGF-1对精原细胞MAPK途径信号转导的影响

Effect of IGF-1 on the signal transduction pathway of the MAPK route in the spermatogenous cell

而LIF对山羊精原细胞增殖并无显著影响，但在干细胞克隆形态的维持上起到较好的作用。

LIF was not significant improve SSCs proliferation , but for good shape colonies maintenance .

本结果提示人睾丸精原细胞瘤的发生与抗癌基因Rb蛋白产物表达的缺失和P（53）基因的突变有关。

The results are suggest that inactivation of Rb gene and mutation in P_ ( 53 ) gene associated with the development of human testicular seminoma .

然而从未分化的精原细胞分化为A1型精原细胞是一个非常很关键的时期。

Obviously , it is a very important period when germ cells differentiate from A0 to A1 .

原位杂交显示，GFRα1主要表达于未分化的精原细胞。

GFR α 1 mRNA was mainly expressed by undifferentiated spermatogonia .

结论MRI为显示未降睾丸精原细胞瘤的最好方法，它能精确显示恶变隐睾的部位、内部结构和侵犯范围。

Conclusion MRI is the first choice for demonstrating seminoma of undescended testis , as it can well display the location , inner structure and extent of the tumor .

mTR反义寡核苷酸在体外培养的A型精原细胞中的分布特点及稳定性研究

Study of the stability and intracellular distribution of antisense oligodeoxynucleotide in type A spermatogonia in vitro