Obviously , the therapeutic breakthrough for SCOS depends on significant progress in fundamental research and understanding the pathological mechanism about it . Testes , one of the most important sexual organs , have the functions of producing sperm , secreting testosterone and so on .
This type is called obstructive azoospermia . Primary azoospermia can be divided into Sertoli cell-only syndrome ( SCOS ), complete spermatogenic arrest , Klinefelter syndrome , hypospermatogenesis and so on .