X-Message-Number: 25510
From: "The NanoAging Institute" <>
Subject: Looking to frozen frogs for clues to improve human medicine
Date: Mon, 10 Jan 2005 20:29:37 -0500

Looking to frozen frogs for clues to improve human medicine

WASHINGTON - This is the way a wood frog freezes:
First, as the temperature drops below 32 degrees, ice crystals start to form
just beneath the frog's skin. The normally pliant and slimy amphibian
becomes - for lack of a better word - slushy.

Then, if the mercury continues to fall, ice races inward through the frog's
arteries and veins. Its heart and brain stop working, and its eyes freeze to
a ghostly white.

"Imagine an ice cube. Paint it green," and you've got the wood frog in
winter, said Ken Storey, a professor at Carleton University in Ottawa. The
frog is solid to the touch and makes a small thud when dropped.




http://www.nanoaging.com/modules.php?name=News&file=article&sid=839

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