They inject it somewhere else:
"the researchers injected repeated doses of citric acid-coated nanoparticles into the bloodstream of mice for 2 days, guided the nanomaterials to the testes with magnets, and then applied an alternating magnetic field to the area for 15 minutes. The nanoparticles heated the testes to a temperature of 104 F, shrinking them and inhibiting spermatogenesis before gradual recovery 30 to 60 days after treatment"
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Mudface The web isn't callipygian, Thu 29 Jul 2021, 19:36,
Reply)
Seems like an awful lot of bother
If it’s just heat treatment then why not dunk your spuds in a cup of tea?
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wheresthefish Partly filled with wrong, Thu 29 Jul 2021, 20:14,
Reply)