X-Message-Number: 3460
From:  (Thomas Donaldson)
Subject: SCI.CRYONICS Re: New data on Genes and Frozen Animals
Date: Sat, 10 Dec 1994 18:56:18 -0800 (PST)

Hi!

Since it may have been aimed at my comment, I will give a short answer to
Mr. Coetzee's claim that:

>"WE CAN INFER FROM THEIR METABOLIC RATE THAT FROGS WILL SURVIVE FOR 200 YEARS
>"WHEN FROZEN IN ICE"


No. The chemistry changes (in terms of activity of enzymes) at that temperature,
and chemistry does still go on. If Mr. Coetzee can cite an experiment in which,
say, a frog survived for 10 years, I will begin to think he may be right. But
biology is much more complex than that. Without experiment, I doubt that what
he says is true.

Suda did keep brains at a low temperature for a while --- at about -60 C, as I
recall. He also noticed some deterioration. But this does not provide an 
experiment to show Mr. Coetzee is wrong: the situations aren't parallel. 

			Long long life,
			  Thomas Donaldson

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