Myeloblasts

 

These four images were taken from the 1997 Cytohematology Proficiency Test Event - Slide 004. All four images represent myeloblasts. A myeloblast is the earliest recognizable cell of the neutrophilic series. It is usually 15-20 µm in diameter. The nucleus is round or slightly oval and occupies about four-fifths of the cell. The cytoplasm is usually moderately blue in color, smooth, and nongranular. It occupies one-fifth of the cell.

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