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Peptide fragments generated by trypsin digestion of PE-KAA-2 and PE-ESA-2. Peptide fragments produced by trypsin digestion of PE-KAA-2 (a) and PE-ESA-2 (b) were purified by RP-HPLC on TSKgel ODS-120T column, and their enlarged images (c) are shown to compare the peak patterns. The peaks were numbered in serial order of retention time. Peaks 11, 12, 15, 16, and 23, and peaks 13, 20, and 21 were unique for PE-KAA-2 and PE-ESA-2, respectively
