This manuscript reports useful data suggesting a critical role of two cyclin-dependent kinases, CDK8 and CDK19, in spermatogenesis. However, the data supporting the conclusion remains incomplete. This ...

However, the mechanisms of proteins involved in human fertilization, such as that of testis-specific SPACA4, remain poorly understood. Here we demonstrated that SPACA4 is a spermatogenic cell-specific ...

Figure 1. Seminiferous epithelium illustrating spermatogenic progression and indicating the key cell types. Formation of spermatozoa occurs within the seminiferous epithelium of the adult testis, ...