The present invention discloses a transgenic fly that expresses the Iowa mutant version of the human Aβ42 peptide of human amyloid-β precursor protein (APP), and a double transgenic fly that expresses both the Tau protein and the human Aβ42Iowa peptide of human amyloid-β precursor protein (APP). The transgenic flies of the present invention provide for models of neurodegenerative disorders, such as Alzheimer's disease. The invention further discloses methods for identifying genetic modifiers, as well as screening methods to identify therapeutic compounds to treat neurodegenerative disorders using the transgenic flies.
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