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    There are six main criteria for healthy sperm:. Sperm also need to have the right number of chromosomes for a successful pregnancy. A breakdown in any of these criteria can result in male-factor infertility. An estimated 15—20 percent of couples worldwide are affected by infertility. Of those, approximately 30—40 percent are infertile due to male factors, including sperm motility.
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    What Is Sperm Motility and How Does It Affect Fertility?

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    Low sperm motility: Causes, ranges, and treatment

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    Semen Analysis (Sperm Count Testing)

    Sperm is the male gamete , that is, the male sex cell , or the cell in males which has the capacity to fertilise an egg i. Sperm are produced in the seminiferous tubes of the testes. The pituitary gland at the base of the brain causes testosterone to be produced in the testes.
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    The aim of this study was to report a successful pregnancy using completely immotile frozen-thawed spermatozoa selected by laser. A single laser shot was used to detect the presence of viable immotile spermatozoa in fresh and frozen-thawed testicular spermatozoa. The viability rate was The thawing test was performed on the day of oocyte pick-up, and no motile sperm were observed after extending the culture for another 4 hours, while a survival rate of
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