Sometimes there are no sperms found in the ejaculate whereas they may be the presence of some usable sperm found in the testis which is made in testis but is not able to get ejaculate. A threshold effect is observed with the sperm production also like in case if there is high sperm production in testis then sperms spill over into the ejaculate and when the sperm production is less tha... https://fertilitycentrenepal.com/azoospermia/