CD19 and leukemia: Cells with lymphoid markers were also present in the transcriptionally defined leukemia cells, but in smaller proportions, including CD19+/CD22+/CD30+ cells (5.96%) CD19+/CD22+/CD45+ cells (5.49%), CD3+/CD5+/CD7+ cells (4.45%), and CD3+/CD4+/CD5+ cells (0.4%) (Fig. 1d).