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Frozen Frogs

The common wood frog freezes solid every winter and then, come spring, defrosts and mates.
Topic: NatureNatureBrand: NOVA ScienceNOWNOVA ScienceNOW

(This video is no longer available for streaming.) Wood frogs freeze solid in winter then thaw back to life and mate in the spring. How do they do it? Scientists have now figured out how to recreate this extraordinary process of cryopreservation with mammalian organs. To date they have successfully frozen, thawed, and transplanted rat livers and pig hearts. Their dream? Enhanced preservation of human organs for transplant.

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