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Error in Text. In the Original Contribution by Graff-Radford et al titled “Association of Low Plasma Aβ42/Aβ40 Ratios With Increased Imminent Risk for Mild Cognitive Impairment and Alzheimer Disease,” published in the March issue of the Archives (2007;64:354-362), an error occurred in the “Methods” section on page 356. In the subsection titled “Method of Measuring Plasma Aβ40 and Aβ42 Levels,” the fourth sentence should have read as follows: “Plasma Aβ measures were made using an enzyme-linked immunosorbent assay method with the well-characterized antibodies BAN-50/BA27 specific for Aβ40 and BNT-77/BC05 specific for Aβ42.9”
Error in Text in: Association of Low Plasma Aβ42/Aβ40 Ratios With Increased Imminent Risk for Mild Cognitive Impairment and Alzheimer Disease. Arch Neurol. 2007;64(9):1246. doi:10.1001/archneur.64.9.1246
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