Fig. 3. Flow cytometric immunophenotyping plots with the population of interest (B cells) gated in red on CD19 versus side-scattered light (SSC). The B cells are positive for CD11c (bright), CD25 (bright), CD200, CD103, and CD123 diagnostic of hairy cell leukemia. Note the dim to moderate CD23 positivity in the CD19+ lymphoid cells as previously reported in the literature.