A team of researchers from San Francisco has sayd that an artificial testicle that produces human sperm could help solve the problem of male infertility,
Researchers hope they can make such a “sperm-making biological machine”. It will be shaped like a cylindrical bag a few inches long and won’t be attached to the body.
It would have to be replaced after every cycle of sperm production, which takes 70 days.
It shouldn’t be confused with a non-sperm-producing prosthesis that is commonly used by men missing a testicle, which are filled with a saline solution.

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