X-Message-Number: 1500
Date: Mon, 21 Dec 92 11:51:42 PST
From:  (Thomas "Hank" Hogan)
Subject: Re: Reaction Rate (Re: After 5,000 years of primitive cryonics)
> Newsgroups: sci.cryonics,sci.med,sci.bio
> References: <>

Hi,  I enjoyed reading your posting.
I have a question: WHY DO CELL SUSPENSIONS TURN PINK IN NITROGEN (liquid)?
When I freeze cell suspensions (5%DMSO, 10% serum) they 
usually turn pink when they get to liquid nitrogen temperature.
This pink cast is quite noticeable.  It reminds me of the blue
toe of a glacier, but I don't think this is the same phenomenon. 
Any ideas?					Hank

[ I didn't have an answer so I figured I would ask the CryoNet folks his
  question (with his permission).  He also suggested that maybe cell lysis
  had something to do with the pink color.  Comments? - KQB ]

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