CD19 and acute lymphoblastic leukemia: Of the CD34−CD10+CD19+ population, an average of 0.9 subpopulations/patient (minimum: 0, maximum: 2 and median: 0) were observed in the common ALL BCR/ABL+ patients, while an average of 2.8 subpopulations/patient (minimum: 0, maximum: 12 and median: 1.5) were observed in the common ALL BCR/ABL− patients, which was increased compared to the common ALL BCR/ABL+ patients (P < 0.05).