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Monitoring the oligomerization of wild-type β2m by ESI-MS over 20 days. Mass spectra were acquired 20 min (A), 5 days (B), and 20 days (C) after solution preparation. The assignments of the different oligomeric species are given in the figure. The inset shows an expansion of the 3800–5800 mass/charge range where the growth in intensity of all the detected oligomeric species can be followed.
