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Semen is a thick, cloudy, white substance that contains sperm and
other fluids. Semen is released, or ejaculated, from the penis during a man's
sexual climax (orgasm).
The amount of semen ejaculated varies from between a few drops to
about 1 tsp (4.9 mL) and
usually contains between 40 million and 600 million sperm.
Current as of:
May 22, 2015
E. Gregory Thompson, MD - Internal Medicine & Christopher G. Wood, MD, FACS - Urology, Oncology
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