[ sē′gwə-tŏk′sĭn ]
A potent neurotoxin that is secreted by various dinoflagellates, especially Gambierdiscus toxicus, and can accumulate in the flesh of tropical reef fish, causing ciguatera poisoning if they are eaten.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.