Mar

21

Has anything ever been frozen and revived with cryogenics?

Filed Under Biology 

Andrew C asked:


Is there any testing that proves that cryogenics can work?

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Comments

6 Responses to “Has anything ever been frozen and revived with cryogenics?”

  1. Person on March 26th, 2008 10:13 pm

    yes…eggs. (female sex cell)

  2. Prof Kevin on March 27th, 2008 1:58 am

    YES

    Scientists routinely freeze (then successfully thaw) stocks of individual cells.

    As far as whole animals, there are a few that normally allow themselves to freeze (instead of hibernate), then thaw out after the weather warms up and go about their business as if nothing happened! Check out:

  3. jessimaka on March 27th, 2008 10:50 pm

    well aside from cryogenics you can freeze fish and they will come back to life, or so i am told..

  4. xxxx on March 29th, 2008 3:27 pm

    If you mean freezing in liquid nitrogen ( -196 C), it is routinely done to freeze tissue culture cells in laboratories. But most frozen cells are used withing 2-3 years at most and the longer you store them, the more cells will die.

  5. Julian C on March 30th, 2008 3:35 am

    Sperm cells

  6. Candice Z on April 2nd, 2008 6:50 am

    Cryogenics is low temperature physics, “low” generally referring to temperatures below minus 100 degrees Celcius. You may mean has anything been cryopreserved at cryogenic temperatures and revived. Since the 1950s sperm cells and red blood cells have been frozen and revived on a regular basis. More accurately, they have been partially frozen, because glycerol has been used to reduce ice formation. More recently. other cryoprotectants such as DMSO and propylene glycol have been used to cryopreserve embryos of various species, including humans. If enough cryoprotectant is used there may be no ice formation whatsoever. But even without such high levels of cryoprotectant human embryos have been frozen, stored in liquid nitrogen and later transplanted into the uterus of women who give birth to a child.

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