Freeze-dried Mouse Sperm

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  Mouse Sperm Stored On International Space Station Produces Healthy "Space Pups"

  Japanese researchers found mouse sperm exposed to high levels of cosmic radiation for nearly six years produced a large brood of healthy, unremarkable "space pups."

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  Mouse Sperm Survives in Space, but Could Human Babies?

  Back on Earth, embryos fertilised in vitro with the sperm produced healthy offspring, and grew into normal adults.