d. Neutrophilic Myelocyte.
Size. Twelve to 18 microns in diameter.
(2) Nucleus. The nucleus is round, oval, or flattened on one side. The
chromatin strands are light purple, unevenly stained, and thickened. Nucleoli are
usually absent. The nucleus is smaller than the earlier cells of this series with a
nucleus-cytoplasm ratio of 2:1.
(3) Cytoplasm. The cytoplasm is bluish-pink and contains a small relatively
light area of ill-defined, pink granules, which develop among the dark, nonspecific,
azurophilic granules of the promyelocyte. As the myelocyte ages, the dark granules
become less prominent and the light-pink-colored neutrophilic granules predominate.
e. Neutrophilic Metamyelocyte.
Size. Ten to 18 microns in diameter.
(2) Nucleus. The nucleus is indented or kidney-shaped. The nuclear
chromatin stains dark purple and is condensed into irregular strands. Nucleoli are
absent. The nucleus-cytoplasm ratio is approximately 1.5:1.
(3) Cytoplasm. The cytoplasm is pinkish-blue and covered with many small,
light pink granules.
Figure 4-3d. Granulocytic series:
b. Band Neutrophil.
f. Neutrophilic Band.
Size. Ten to 16 microns in diameter.
(2) Nucleus. The nucleus is shaped like a horseshoe with a dark pyknotic
mass at each poIe of the nucleus where the lobes develop. The nucleus-cytoplasm
ratio is approximately 1: 2.