U.S. scientists said they were able to induce sea squirt tadpoles to develop plaque in the brain and behavioral problems linked to Alzheimer's disease in one day after introducing a mutant protein derived from humans with a hereditary form of the disease. They also found the tadpoles showed a reversal of the condition after receiving an experimental treatment against plaque formation. They think the sea invertebrate could be used as a model for screening Alzheimer's drugs.

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