X-Message-Number: 5066 From: (Brian Wowk) Newsgroups: sci.cryonics Subject: Re: Frozen Dog Date: 28 Oct 95 03:39:54 GMT Message-ID: <> References: <46hcpg$> <> In <46pe77$> Yannis <"yannis"@yannis.seanet,com> writes: >Isn't the sperm at sperm banks kept frozen and then thawed for >use? Why is it that sperm stays viable and not other organs or >organisms? Good question. Isolated cells, as a rule, are easy to cryopreserve. During slow cooling, ice crystals form between cells (not inside cells as many people erroneously believe). These crystals cause much more damage to the highly-organized arrangements of cells in organs than to free-floating cells like sperm. That, in very simple terms, is the answer to your question. ---Brian Wowk Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=5066