X-Message-Number: 6865
Date: Mon, 9 Sep 1996 19:56:36 -0400 (EDT)
From: Charles Platt <>
Subject: Rat Hearts

I am not a cryobiologist, but I have read a bit of cryonics 
history, and the mention of rat hearts reminded me of a 
report that I read some time ago. 

The Nov/Dec 1969 issue of Cryobiology magazine contained a 
paper by the father of cryobiology, Basile Luyet, describing 
an experiment in which he froze pieces of rat hearts after 
perfusion with 20 percent ethylene glycol. After being 
rewarmed, 44 percent of the heart pieces resumed rhythmic 
contractions. The paper by Luyet was titled "Resumption of 
contractions after freezing in liquid nitrogen in small 
pieces of rat heart containing pacemaking centers." 
 
Naturally, I am eager to learn in what respect the recently 
reported experiment with rat hearts differs from the 
experiment performed by Luyet twenty-five years ago. Could
we get some more information on this, please?
 
--Charles Platt


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