Has any mammal been cryopreserved and revived?
Not to cryogenic temperatures. Dogs and monkeys have had their blood replaced with protective solution and cooled to below 0ºC, with subsequent rewarming and revival. Nematode worms have been cryopreserved in liquid nitrogen (-196ºC), and subsequently revived. At the July 2005 Society for Cryobiology Conference, it was announced that a rabbit kidney had been completely vitrified to solid state at -135ºC, rewarmed and transplanted to a rabbit with complete viability. The prospect that this could be done to a mammalian brain is very good. Although a whole mammal has not yet been cryopreserved to cryogenic temperatures and revived, the progress of science is moving in that direction. However, that is not the reason why people currently practice cryonics. Cryonics is practiced because of a belief that the damage caused by current cryopreservation can someday be repaired. Molecular repair technologies like nanotechnology give us hope that we can be revived from cryopreservation that uses cu
