H2AX and Chronic Eosinophilic Leukemia, Not Otherwise Specified: Furthermore, a three-group comparison of patients with CEL, patients without CEL and healthy controls by Kruskal-Wallis test demonstrated no significant differences between the three groups in the number of γ-H2AX foci per cell (p = 0.09) as well as the percentage of γ-H2AX positive cells (p = 0.06).