Answered?: Two causes for no sperm in semen: Complete blockage of transportation by vasectomy or inborn vasa atresia; no sperm production by germ cell or testicular failure such as Sertoli cell-only symdrome, poor germ cell stimulating hormone (LH), etc. How to resolve it? None, but if obstruction is identifiable such as post-vasectomy or obstruction at ejaculatory ducts, surgical release of obstruction can.
Answered 2/10/2017
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