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Slide 16
This is a group of cells at 700x magnification. This would be an easy field to count. The cells are not too thick or so close together that you would lose track of which cells you had counted. It is not necessary to count consecutive fields but you can move around and select areas that are well-stained and spread. Do not select fields for their cell type, as the distribution will be biased. Notice the variability of the cell types in this picture. Normal bone marrow always appears to have many different kinds of cells. What is extremely important is to have segmented neutrophils (segs) and bands present. If segmented neutrophils and bands are absent or decreased, you can be sure that something is wrong with the bone marrow.

Course Section: 06. Microscopic Examination of the Bone Marrow
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