The normal expression of proto-oncogenes plays an important role in the regulation of spermatogonial mitosis, spermatocyte meiosis as well as spermiogenesis and sperm maturation.

• 在正常睾丸生精过程中,原癌基因的正常表达对精原细胞的有丝分裂、精母细胞的减数分裂及精子变形、成熟有重要的调控作用。