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Differentiating Bands from Segs

The presence of thin filaments between nuclear lobes is what distinguishes a segmented neutrophil from a band neutrophil.
Sometimes it is difficult to differentiate between a band and a segmented neutrophil. For example, in the image on the right, the nucleus of the neutrophilic cell is folded, making exact identification difficult. However, due to the thickness of the nucleus and the absence of a filament, we would classify it as a band.