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Published online 6 August 2002 | Nature | doi:10.1038/news020805-2

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Are Pfiesteria species toxicogenic? Evidence against production of icthyotoxins by Pfiesteria shumwayae

Controversy over killer algae's murderous methods.

Algae could be eating fish alive off the US coast, say researchers. Their finding challenges a long-held belief it is toxins produced by the algae that are to blame for tumbling fish populations.

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