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From wire service reports:
In the November issue of the journal Neuron, researchers at McGill University and the University of Montreal report on the most recent advances in regeneration of neurons in spinal cords and in brains that have been damaged by spinal cord injury. Lead researcher was Dr. Samuel David. Only a few years ago, such damage was thought to be irreversible.
It seems that, after injury, nerve cells are ordinarily prevented from regenerating by several chemical inhibitors present in myelin, the insulating nerve sheath material. The present research, done with mice, used purified myelin injected into the injured mice. This produced an immune reaction which in turn inhibited the inhibitors, allowing regrowth of the spinal nerves and of brain cells associated with motor function.
The best known quadriplegic, resulting from spinal injury, is the actor Christopher Reeve, who played Superman in the movies. He has expressed hope that he may walk again. Dr. Benjamin Barris of Stanford Medical School thought that was a fantasy, but is now quoted as saying, "This is the first development that makes me think that maybe he will be up and walking at some point."
Not to put too fine a point on it, this is just one of a very long list of developments which ought to encourage optimism about revival of cryostasis patients.