次级精母细胞

精子表面的PNA凝集素受体出现于精子发生早期，并在初级、次级精母细胞有大量表达；

PNA binding glycoconjugates appeared in early spermatogenesis and expressed in primary and secondary spermatocytes ;

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；

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 .

次级精母细胞期，线粒体数目开始减少，但体积增大；

At spermatocyte ⅱ stage , the number of mitochondria decreased , but the volume increased ;

次级精母细胞核质间出现由内质小泡聚集成的腔。

In the secondary spermatocyte emerges a cavity which is formed by the aggregation of endoplasmic reticulum vesicles .

此6种抗肿瘤药物对次级精母细胞以及处于减数分裂中期、后期的细胞均无明显影响。

In addition , all 6 drugs exerted no effect on secondary spermatocytes and the cells in meiotic metaphase and anaphase .

提示11-酸睾酮主要干扰了初级、次级精母细胞和精子细胞的正常分化发育。

To hint 11-sour testosterone main to interfere with normal differentiation development of first spermatocyte , apoptosis second spermatocyte and nematoblast .

工蚁在次级精母细胞中最高，在精原细胞和初级精母细胞中较低。

In the workers , a strong expression of Bcl-2-like was shown in secondary spermatocytes , and a lower expression level in spermatogonia and primary spermatocytes .

精母细胞期：精巢体积增大，半透明乳白色，主要由处于初级精母细胞和次级精母细胞阶段的生殖细胞组成；

The testis at spermatocyte phase develops , and is translucent , and the spermatogenetic cells in seminiferous tubule are primarily composed of primary spermatocytes and secondary spermatocytes .

第二次成熟分裂由次级精母细胞产生精细胞，有核32个，呈圆形、梭形和弯梭形，由后者发育为32个精子。

In the secondary maturation cell division the secondary spermatocyte generated spermatid containing 32 nuclei with round , spindle and crescent shapes , which eventually developed into 32 spermatozoon .

结果表明，从精原细胞期到次级精母细胞期，在生精细胞之间存在间隙连接与分隔连接，并且两种连接相互邻接，桥粒仅在精原细胞之间发现；

The results show that , from spermatogonium stage to secondary spermatocyte stage , there exist neighboring gap junctions and septate junctions between spermatogenic cells , and desmosomes between spermatogonia .

其中最强信号出现在精巢发生期和增殖期的精原细胞和初级精母细胞中，在次级精母细胞中信号较低，在成熟的精子细胞中信号很弱。

Within the testes , the strongest signals for Cq-PHB were found in spermatogonia , with lower positive signals in secondary spermatocytes , and weak or absent signals in mature sperm .

与模型组相比，盐酸青藤碱治疗后大鼠睾丸精曲小管精原细胞，初级、次级精母细胞等结构清楚，排列整齐，层次分明。

Compared with the model group , after the treatment of the sinomenine hydrochloride , seminiferous tubules 、 spennatogonium 、 primary secondary spermatocytes of rat testicular are clear 、 orderly 、 distinct .