To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video 1 Mechanisms of non-obstructive azoospermia caused by TOP6BL variants Chao Wang, Yanwei Sha, Yayun Ji, Peilin Zhou, Shie Wang, and Huiliang Zhou 2025. 170:None-None DOI: 10.1530/REP-25-0298 Download Original Video