X-Message-Number: 6627 From: (Brian Wowk) Newsgroups: sci.cryonics Subject: Re: An Idea for cryogenics. Date: 27 Jul 96 02:30:42 GMT Message-ID: <> References: <4t80kr$> In <4t80kr$> (Grommit) writes: >From what I do know about cryogenics, what kill's the person is the ice >crystals bursting cells(correct?). At higher pressures(humans can stand pretty >high pressures if they are pressurized slowly, rigth?) ice crystals don't form >until a lower temperature. So why don't they pressurize the subject to be >frozen and then lower them to a temperature low enough to preserve them but >form ice. Very perceptive. This suggestion is made by newcomers only about once a year, or so-- not quite frequent enough to justify including in the cryonics FAQ. The short answer is that the pressures required are prohibitive from an engineering standpoint, and fatal from a biological standpoint (killing by protein denaturation instead of freezing). Current approaches such as vitrification seek to avoid ice formation chemically instead of barometrically. *************************************************************************** Brian Wowk CryoCare Foundation 1-800-TOP-CARE President Human Cryopreservation Services http://www.cryocare.org/cryocare/ --------------------------------------------------------------------------- Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=6627