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The effect of preliminarily aggregated (within 24 h) Aβ1–40 (10 µM) with/or without AChE on the enzyme activity as measured at 412 nm in 0.1 M phosphate buffer (pH 8.0) at 25 °C. Data are presented as means ± SEM. *—the difference with the control is statistically significant at p ≤ 0.05; **—at p ≤ 0.01. Statistical analysis was carried out using the Mann–Whitney test (n = 3).
