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Hematopathology — Image #03 — Band

 

Band

The penultimate stage of maturation for a neutrophil. The cell has a horseshoe shaped nucleus with a fairly uniform thickness throughout. The nucleus has not condensed down as much as the fully mature cell. Bands account for 0-13% of the circulating WBC. In reactive conditions (infection, surgery, etc.) their proportion can increase. Greater than 16% bands is referred to as a "left shift" in maturation. Myeloid cells at earlier maturational stages may be seen as well. (Not demonstrated in this picture.)

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