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Resolution of diacetylated H4 4–17 on each LTQ Velos Pro scan mode. Mass spectra of (A) doubly charged ([M + 2H]2+ = 761.939) and (B) triply charged ([M + 3H]3+ = 508.295) peptides are displayed. The resolution (Δm/m) of the monoisotopic peak is indicated. (C) Resolution of the peptides from panels A and B as a function of scan rate.
