The normal erythrocyte stained with Wright's stain and observed using light microscopy is round with a pale area in the center. The mean diameter after fixing, drying and staining is about 8.0 microns. The mean corpuscular thickness is approximately 2.4 microns. The mean ratio of thickness to diameter is 3.4. Notice the slight variation in the size of the cells. There is slight variation in the size of erythrocytes even in all so-called "normal" individuals.
Course Section: 01. Description of Red Blood Cells
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