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CHAPTER 22 MISCELLANEOUS CELLS 213
CELLS OCCASIONALLY SEEN IN BONE MARROW
A B
FIGURE 22–2A Fat/adipose cell (BM 3500). FIGURE 22–2B Mast cell (BM 31000).
DESCRIPTION: Large, round cell, 50 to 80 mm; DESCRIPTION: Large cell (12-25 mm) with round to
cytoplasm filled with one or several large fat oval nucleus; cytoplasm is colorless to lavender with
vacuoles, colorless to pale blue; nucleus small, many dark blue to black granules that may partially
round to oval, and eccentric; chromatin coarse; obscure the nucleus. Constitute ,1% of bone
nucleoli seldom seen marrow cells. Increased numbers may be seen in
allergic inflammation and anaphylaxis.
C D
FIGURE 22–2C Mitosis (BM 31000). FIGURE 22–2D Mitosis (BM 31000).
Mitotic figure—a cell that is dividing. Increased numbers may be seen in neoplastic disorders.
