RE: Liquid Nitrogen Freeze artifact

From:"Featherstone, Annette" (by way of Histonet)

-----Original Message-----
From: Featherstone, Annette
Sent: Thursday, July 17, 2003 09:43
Subject: Liquid Nitrogen Freeze artifact


Recently someone has been freezing muscles wrapped in foil in liquid
nitrogen. The tissue presents itself as totally unfrozen upon unwrapping the
foil. I say that it is trapping CO2 around the tissue and preventing it from
freezing, kind of like a vapor lock.  Am I right or even close?
Annette HT

-----Original Message-----
From: Jose Luis Palazon Fernandez []
Sent: Wednesday, July 16, 2003 09:27
Subject: Tungsten carbide knife sharpener

Dear all

Does any of you know how much does it cost a Tungsten carbide knife
sharpener? I found a price here in Spain but I think it is excesive
expensive (nearly 15,000 US $) . Would like to know prizes in other places

thanks in advance for your help

Jos#233# Luis

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