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. 2004 Sep 16;54(4):359–371. doi: 10.1007/s00262-004-0592-y

Fig. 4.

Fig. 4

Peptide quantification by comparison to the deuterium-labeled ALLAVGATK peptide. The average ion abundance was calculated from the three measured product ions. The ionization efficiency was determined from each peptide compared to the deuterium-labeled ALLAVGATK. The average ion abundance and ionization efficiencies were used to calculate the abundance of the peptides.