参与精子发生周期的精原细胞经过生长、体积增加而发育形成的精母细胞。刚形成的初级精母细胞，有一个较大的圆形核，染色质颗粒着色深。随着细胞体积的逐渐增大，完成DNA的复制和有关蛋白质的合成，即染色体进行了一次复制。
In the soldier caste,the process of spermatogenesis included only the spermatogonia,primary spermatocyte and secondary spermatocyte stages;no spermatids or spermatozoa were observed.
兵蚁生殖细胞发育仅有精原细胞、初级精母细胞、次级精母细胞,没有精细胞和精子产生。
参考来源 - 尖唇散白蚁工蚁、兵蚁和繁殖蚁精子发生的比较研究·2,447,543篇论文数据，部分数据来源于NoteExpress
初级精母细胞多边形，拟染色体包围中心粒形成中心粒附属物；
The spermatocyte is of polygonal shape, which contains a centriole appendage formed by the chromatoid body's surrounding the centriole.
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.
浓缩铀uo_2f_2可诱发精原细胞和初级精母细胞的染色体畸变。
Enriched UO2F2 could result in chromosomal aberrations in spermatogonia and primary spermatocytes.
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