X-Message-Number: 16927
From: "Joseph W. Morgan" <>
Subject: Cryo-Surgery
Date: Sun, 8 Jul 2001 16:02:32 -0700

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On the Discovery Science Channel I watched a cancerous tumor being destroyed by 
freezing it and bursting the cell walls using liquid nitrogen. 


Later a heart valve, preserved in liquid nitrogen, was dropped into a beaker of 
warm water and then transplanted into a patient.  Why wasn't the frozen heart 
valve ruined by the cold temperatures?


If body parts frozen to cryogenic temperatures can be thawed and transplanted, 
why is there a problem with thawing an entire body?

Joseph W. Morgan


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