CEP78 and male infertility: To further explore the underlying causes of male infertility of Cep78−/− mice, we assessed the concentration, motility, and progressive motility of sperm isolated from cauda epididymis using computer-assisted sperm analysis (CASA), and all three parameters were decreased upon Cep78 deletion (Table 1, Figure 1—video 1 and Figure 1—video 2).