X-Message-Number: 5599
Date: Mon, 15 Jan 1996 16:27:59 -0500
From:  (Ralph Dratman)
Subject: Re: CryoNet #5592 - #5597

>Brad Templeton--without displaying any calculation--expresses a certain
>degree of pessimism (some would call it optimism), estimating or guessing a
>10% chance of revival of today's cryostasis patients. Most
>cryobiologists--without even pretending to make a calculation--call the
>chance "negligible."

Dr. Ettinger,

Do you have specific references from cryobiologists commenting on this
question, or are you basing your statement on informal communications?

I am starting to take cryonics seriously for the first time, and would like
to learn more about the scientific issues, particularly with respect to
tissue damage and recent advances in cryoprotection technology, if any. A
current review article would be ideal.

In particular, I am intrigued by the fact that embryos can be frozen and
thawed, while adult mammals apparently cannot. Why is that? Is there a
threshold of size and complexity involved?

Also, how does the brain itself fit into this spectrum of freezability? Of
course we know that surgeons use cold to *destroy* brain tissue -- has
anyone tried reviving any neural tissue after deep freeze?

I apologize if these questions have been asked and answered before, maybe
even numerous times; the problem is that I don't know where I should look
for this information. The CryoNet FAQ seems to be pretty light in the area
of basic science.

Thanks.


Ralph Dratman



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