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(A) LC–MS chromatograms of SCX S2, RP R13, and the synthetic peptide LPLF, (B) MS spectra of LPLF originated from fraction SCX S2 (m/z 489.12, tR 13.51 min), fraction RP R13 (m/z 489.08, tR 13.51) and synthetic LPLF (m/z 489.07, tR 13.59).
