X-Message-Number: 6865 Date: Mon, 9 Sep 1996 19:56:36 -0400 (EDT) From: Charles Platt <> Subject: Rat Hearts I am not a cryobiologist, but I have read a bit of cryonics history, and the mention of rat hearts reminded me of a report that I read some time ago. The Nov/Dec 1969 issue of Cryobiology magazine contained a paper by the father of cryobiology, Basile Luyet, describing an experiment in which he froze pieces of rat hearts after perfusion with 20 percent ethylene glycol. After being rewarmed, 44 percent of the heart pieces resumed rhythmic contractions. The paper by Luyet was titled "Resumption of contractions after freezing in liquid nitrogen in small pieces of rat heart containing pacemaking centers." Naturally, I am eager to learn in what respect the recently reported experiment with rat hearts differs from the experiment performed by Luyet twenty-five years ago. Could we get some more information on this, please? --Charles Platt Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=6865