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What happens to unused sperm/semen in the testes? If it's reabsorbed into the body, how, and does this have a particular effect on health? - Quora
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How Sperm Is Created - YouTube
Male Reproductive System (for Parents) - Nemours KidsHealth
Scientists discover single sperm can have big impact on a woman (they don't say!) | London Evening Standard | Evening Standard
Blood cells sperm hi-res stock photography and images - Alamy
How Long Does Sperm Live Outside the Body?
