<prompt> Normal sperm count is:20 million per ml40 million per ejaculateBothNone  <response>: Some important points regarding spermatogenesisSperms are produced in: seminiferous tubules in testesSertoli cells nurture the developing spermsTime for spermatogenesis: 64 days Thymidine labelling records say it is 74 daysNormal sperm count: 20 million per ml or 40 million per ejaculateInfertility is considered with a sperm count of less than 15 million spermsmlFructose is the main source of energy for spermsProstaglandins suppress immune response against sperms in the female reproductive tractZinc serves to help to stabilize the DNA-containing chromatin in the sperm cellsAcrosomal cap houses the various enzymes needed to penetrate the zona pellucida of the oocyte. 