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Expression of ERAP1 and ERAP2 proteins in 721.221-B*51:01 and BCH-30 cells. Representative Western blots and quantification of enzyme expression from three (for ERAP1) or four (for ERAP2) independent experiments (mean ± S.D. (error bars)) are shown. ERAP1 and ERAP2 expression in 721.221-B*51:01 was reported previously (25), but the blots are repeated here in parallel with BCH-30 for comparison.
