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Representative HX-MS spectra of different aged Aβ samples after 1 h deuterium labeling. Each row represents one sample aging time denoted at left. Each column presents one report peptide denoted on the top. The assignments of peaks to different species are marked as F (fibrils), H (HMW oligomers), and M (monomer).The intact Aβ spectra in the left column are reproduced from Qi et al. (25) by permission.
