MPO and hereditary elliptocytosis: Importantly, EGCG treatment markedly reduced MPO levels, a marker of neutrophil infiltration, to 47% in the HE group (112.2 ± 66.82 pg/mg protein, p = 0.008) and 34% in the LE group (81.7 ± 67.93 pg/mg protein, p = 0.005) (Figure 4B).