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Deconvolution of positive reflectron mode MALDI-TOF MS of SP4TM showing the relative type-A percentage of PACs at different degree of polymerization (DP). At 2–4 DP, PACs contain predominantly one or more type-A interflavan bonds, at 4–7 DP contain predominantly two or more type-A interflavan bonds, while at 9 DP they contain predominantly three of more type-A bonds.
