Eosinophil maturation

7 Eosinophil maturation



image

FIGURE 7–1 Eosinophilic sequence—eosinophilic myelocyte.



Eosinophilic myelocyte



image

FIGURE 7–2A Eosinophilic myelocyte.



image

FIGURE 7–2B Electron micrograph of eosinophilic granules to demonstrate crystalline structure of granules.




Size:


12-18 μm



Nucleus:


Round to oval; may have one flattened side



Nucleoli:


Usually not visible



Chromatin:


Coarse and more condensed than promyelocyte



Cytoplasm:


Colorless to pink



Granules:



Primary:

Few to moderate



Secondary:

Variable number; pale orange to dark orange; round; appear refractile



N/C RATIO:


2:1 to 1:1



Reference interval:



Bone marrow:


0% to 2%



Peripheral blood:


0%





Note:


This chapter begins with the image of the myelocyte, rather than the blast, because it is at the myelocyte stage that secondary granules, which define a cell as an eosinophil, first appear.



image

FIGURE 7–3 Eosinophilic sequence—eosinophilic metamyelocyte.



Eosinophilic metamyelocyte



image

FIGURE 7–4 Eosinophilic metamyelocyte.




Size:

Related posts:

Hematopoiesis Variations in size and color of erythrocytes Megakaryocyte maturation Erythrocyte maturation Variations in shape and distribution of erythrocytes Diseases affecting erythrocytes

Stay updated, free articles. Join our Telegram channel
Tags:
Jun 12, 2016 | Posted by in HEMATOLOGY | Comments Off on Eosinophil maturation

Full access? Get Clinical Tree
Get Clinical Tree app for offline access