A Wright stained peripheral smear from a patient with multiple myeloma who was to undergo autologous bone marrow transplant using CD34⁺ peripheral stem cells is shown. The patient had been treated with prednisone and G-CSF. Although the majority of cells in this view are terminally differentiated bands and PMNs, a spectrum of myeloid maturation is noted including a blast cell. A subgroup of cells in this field has the morphologic appearance of monocytes and monocytoid precursors.