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CD spectra of Aβ40 (50 µM) in phosphate buffer (PB 10 mM, pH 7.33) in the absence or presence of 50 µM of intermediate bis-ethers di, dii, dvi, and bis-etherified bis-halcones c2, c3, and c4 (1:1 ratio). Spectra were recorded for a period of 40 days at 33 °C. Representative spectra from n= 3 independent experiments are presented.
