Maitotoxin or MTX is an extremely potent toxin produced by Gambierdiscus toxicus, a dinoflagellate species. Maitotoxin is so potent that it has been demonstrated that an intraperitoneal injection of 0.00013 mg/kg was lethal in mice.The molecule itself is a system of 32 fused rings. It is notable because it is one of the largest and most complex non-protein, non-polysaccharide molecules produced by an organism. (Wikipedia)
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