Already several times the incident, the person who died of cold in extreme temperatures and can live again. A researcher managed to explain this phenomenon by experiments conducted with yeast and earthworms.

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Mitsutaka and Erika (processed)
Freeze to death or ‘freezes to death’ is death that is triggered by cold temperatures that are too ekstem, which is common in mountainous areas or cold climates. Although very rare, have some one who froze to death she was shocked back to life and the people around him.
The first case occurred in the winter of 2001, happened to Erika, a baby 13 months in Canada. Erika meinggal because just wearing a diaper and wandering outside the home, he died with the body temperature dropped to 16 degrees centigrade.
When found, the baby’s heart was estimated to have stopped beating for 2 hours. However, the baby’s heart beat miraculously returned shortly after he was warmed and given artificial breathing.
Another case occurred in Japan in 2006. A man, Mitsutaka Uchikoshi lost in the snowy Mount Rokko. He just found again after 23 days later in a frozen condition and showed no signs of metabolism.
Mitsutaka also successfully revived after being taken to a warmer place and given help. Even his health condition was reported recovered shortly afterwards.
As quoted by Science Daily, Friday (06/11/2010), a scientist from the Fred Hutchinson Cancer Research Center, Mark B. Roth, Ph.D. conducting experiments to solve the puzzles of human life this kemabli. Roth uses yeast and earthworms embryos (nematodes).
In the first experiment, yeast and embryos Torh store at temperatures above freezing. It did not take long, in just 24 hours, 99 percent of the creature was really dead and can not live longer warmed though.
Then Roth held a subsequent experiment, yeast and worm embryo is placed in an environment lacking oxygen before frozen in a state of anoxia (no oxygen). In this experiment, 66 percent of yeast and 97 embryos worms can live again after warmed and given enough oxygen.
Anoxia conditions, according to Roth has resulted in stopping the cell cycle so that both types of living things is a dead faint. Supported by the cold temperatures, the biological cell cycle awake to remain stable during suspended animation so it does not really die. It is also likely to cause living beings can live again after re-warmed and given the help!
“When the living creatures in a state of suspended animation so, the risk of error in the biological processes that lead to death will be reduced,” said Roth.
Research funded by NIH and National Science Foundation will be published online in the journal Molecular Biology of the Cell edition July 1.
So if anyone you know is dead but suddenly bobbed again at the front door of your house, do not trigger panic for now. Perhaps the person is only exposed to a dead faint.