One Plasma Cell (left), 1 Macrophage (center) and 3 lymphocytes. The macrophage has a fine, evenly distributed and lighter staining chromatin pattern versus the coarser, unevenly distributed and darker staining chromatin pattern in the plasma cell. The lymphocytes' nuclei are also semi-dense and darker staining. Plasma cells have blue cytoplasm of various shades and may contain a few vacuoles. Macrophage cytoplasm is gray and often contains multiple vacuoles of variable size. Cellular outline of plasma cells is distinct, whereas macrophages have an irregular one. Normal marrow - 100X
Image ID: 0148-021
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