Primary spermatocyte

Primary spermatocyte proliferation period ( 120 days old );

120日龄左右为初级精母细胞增殖期；

At the stage of primary spermatocyte , the cell morphology changed dramatically from prophase I to telophase I.

在初级精母细胞阶段，前期Ⅰ至末期Ⅰ的细胞形态变化明显。

Method improvement for chromosome aberration test of mouse primary spermatocyte

小鼠睾丸初级精母细胞染色体畸变试验方法改进及应用

The primary spermatocyte contains decondensed chromatin , a large amount of endoplasmic reticulum vesicles , special membrane system and crystalline lattices .

初级精母细胞染色质呈非浓缩状，胞质中具众多的内质网小泡，特殊的膜系及晶格状结构。

The immunolocalization of p38 MAPK was in spermatogonium and primary spermatocyte with positive substance in nucleus .

6,7周龄小鼠睾丸中p38MAPK表达较丰富，免疫反应阳性细胞为精原细胞和初级精母细胞，免疫阳性反应物均主要位于细胞核内。

Methods : Micronucleus test in bone marrow PCE and chromosome aberration assay in primary spermatocyte were undertaken in mice exposed to the immersion .

方法：用香烟烟蒂生理盐水浸泡液为实验材料进行小鼠骨髓嗜多染红细胞（PCE）微核试验和睾丸初级精母细胞染色体畸变试验。

Objective : To estimate the number of spermatids generated by one primary spermatocyte and thus evaluate the efficiency of meiosis during spermatogenesis in normal adult men .

目的：估计正常成人精子发生的成熟分裂过程中一个初级精母细胞实际形成了多少个精子细胞，从而评价成熟分裂的效率。

The prophase of primary spermatocyte would appear synaptonemal complex , which should been the symbol that the homologous chromosome carried through the change of homologous gene .

黄颡鱼初级精母细胞的前期出现联会复合体，应是同源染色体之间进行同源基因交换的标志。

Using cell whole mount preparation , tetrad basal boby-axoneme complexes in the primary spermatocyte from testicular cysts of fourth instar larvae of Bombyx mori are examined by transmission electron microscopy .

应用细胞整装制备和穿透电子显微镜技术，在家蚕4龄幼虫睾丸育精囊的初级精母幼胞内检查出四个基体&轴丝复合体结构。

Meiotic maturation could be achieved in reconstructed oocytes matured after primary spermatocyte was transferred into GV ooplasm , but the first polar body was very large and the proportion of oocytes with adequately condensed chromosome was very low .

初级精母细胞（PS）植入GV期卵胞质后，能够完成第一次减数分裂，但很多重构卵都排出异常大的第一极体，染色体也不能完全凝集。

The incidence rates of chromosome aberration cells , autosome univalent and sex chromosome univalent had no significant difference between the hexaflumuron-treated groups and the negative control ( P > 0.05 ) in the chromosome aberration test of primary spermatocyte of mice .

氟铃脲各剂量组的小鼠睾丸初级精母细胞染色体畸变细胞率、常染色体单价体发生率和性染色体单价体发生率与阴性对照组比较，差异无统计学意义（P>0.05）。

Results The rates of chromosome aberration of primary spermatocyte , cell deformity and sperm deformity were significantly higher in the animals treated with 2 mg / kg , 4 mg / kg and 8 mg / kg of AN by subcutaneous injection than those with negative controls .

结果皮下注射丙烯腈2mg/kg，4mg/kg和8mg/kg组小鼠睾丸初级精母细胞染色体畸变率、细胞畸变率及精子畸形率均显著高于阴性对照组。

The results show : ( 1 ) In testis , PNA receptors sites were firstly observed in the cytoplasm and plasma membrane of primary spermatocyte , and greatly increased in the plasma membrane of second spermatocyte , then decreased and were accumulated in the tail of the round spermatid .

结果表明：（1）在中华蚱蜢的精子发生中，PNA受体是由初级精母细胞合成，然后转移到膜上，在次级精母细胞，由于量的积累其质膜出现了强阳性标记；

Results : Sertoli cell , primary pachytene spermatocyte ( PPS ), spermatogonia , round spermatid were the main four round cell groups that can be classified under Hoffman optics .

结果：在配置Hoffman镜头的倒置显微镜下人睾丸圆形细胞主要可分为4群：支持细胞（Sertoli）细胞，粗线期初级精母细胞，精原细胞，圆形精子细胞。