(Greek: four; a number used as a prefix)
Ingestion rapidly causes malaise, dizziness, and tingling around the mouth, which may be followed by ataxia, convulsions, respiratory paralysis, and death.2. A potent neurotoxin found in the liver, skin, and ovaries of the puffer fish, and in the California newt.
3. A powerful nerve poison found in the eggs of the California newt and in certain puffer fish in Japan.
In concentrated form, it is more toxic than cyanide.
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