acidic denaturation.

The components and contributions of semen are as follows:

A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10⁶ spermatozoa/mL or more, sperm count of 40×10⁶ spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid progression (category

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