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Tom Berry
04/30/2003, 07:10 AM
Hey all you docs,

Did you see these threads about the palytoxin in zooanthids?

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=158730

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=158663

"Palytoxin The crude ethanol extracts of the Palythoa toxica proved to be so toxic that an accurate LD50 was difficult to determine. More recently, the toxicity has been determined to be 50-100 ng/kg i.p. in mice. The compound is an intense vasoconstrictor; in dogs, it causes death within 5 min at 60 ng/kg. By extrapolation, a toxic dose in a human would be about 4 micrograms. It is the most toxic organic substance known!"

Tom Berry