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. 2019 Jan 6;24(1):186. doi: 10.3390/molecules24010186

Figure 2.

Figure 2

Left panel: normalized FTIR spectra of Aβ1–40 monomers (M) in 10 mM HEPES/D2O pD11, fibrils (F) after 24 h incubation in 10 mM HEPES pD7.4, and Cu(II)-induced oligomers (Aβ1–40-Cu(II)Õ) after 24 h incubation at 37 °C, pD7.4 [51]. Right panel: second derivatives of the FTIR spectra. Reprinted with permission.