Interestingly, no statistically significant differences were found (p > 0.05) between BM and PB samples, as regards the frequency of altered neutrophil phenotypes (79% in BM vs 58% in PB, p > 0.05), except for CD10 that was more frequently absent in BM than PB of childhood BCP-ALL (57% vs. 15%, p = 0.004). Here, MME is linked to acute lymphoblastic leukemia.