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A powerful toxin that occurs in corals of the genus Palythoa of the South Pacific and disrupts the flow of ions across cell membranes. It is rapidly fatal to humans in very small doses and is one of the most complex naturally occurring substances.
palytoxin(păl″ĭ-tŏk′sĭn) [Fr. Paly(thoa), the genus name of a coral + ″],
A potent toxin produced by microscopic marine algae that grow on coral. It destroys blood cells, alters cardiac conduction, and damages nerves. Intoxication with PTX can result in bleeding, weakness, blood vessel constriction, ventricular fibrillation, and death.