Expression of CD58 and CD97 in BCP-ALL. Cells from 14 BCP-ALL samples were stained for CD34 and CD19 and gated into CD34⁺/CD19⁺, CD34⁺/CD19^–, CD34^–/CD19⁺, and CD34^–/CD19^– subpopulations. CD58 expression (Ai) was assessed in 12 patients (1-12) and CD97 expression (Bi) was assessed in 10 patients (1-3, 5, 6, 8, 9, 11, 19, 25). CD58 and CD97 expression was compared with normal MNCs (n = 18 and n = 11, respectively) and HSCs (n = 6 and n = 9, respectively). The proportions of the triple-stained populations in these samples are shown in panels Aii and Bii. Horizontal lines represent medians, and error bars represent the interquartile ranges. Each symbol represents a different patient.