Steps closer to suspended animation reality

US Scientists have made new steps forward after reviving a cryogenically frozen organism.

Over 60 years of trials the preservation of bodies and brains in a state of suspended animation has only been achieved in individual cells…

Until now.

The Science Journal ACS Nano published an article about US researchers successfully thawing and reanimating frozen zebra fish embryos.

The report outlines as frozen water expands, the ice will burst cells from the inside out. Replacing part of the body’s fluids with antifreeze is a possible solution.

Antifreeze filled zebra fish embryos were snap-frozen to -196C in liquid nitrogen for decades, with the problem being defrosting them.

The warmth from a laser was unable to raise their temperatures fast enough and evenly enough to avoid the emergence of ice crystals.

The solution?

Another additive to the original antifreeze are golden nano-rods — tiny fragments of metal to conduct the laser’s heat, catalysing and distributing the heat more evenly.

More zebra fish embryos were filled with the new antifreeze, then snap frozen for a few minutes before undergoing laser rapid-defrost treatment.

10 per cent of the embryos survived, began to grow, and moved once again.

A very big step forward into the possibility of suspended animation.

Picture Courtesy: Cryonics Institute

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