58 Monocytes

Michelle To and Valentin Villatoro

Notes: Monocyte nuclear and cytoplasmic morphology can be highly variable.1

 

Nucleus-to-Cytoplasm Ratio: Variable 2

 

Nucleoli: Not visible 2

 

Nucleus:1,2

Variable shapes (Folds, kidney shaped)

Loose, lacy, violet chromatin

 

Cytoplasm:1,2

Blue-gray cytoplasm (Ground glass appearance due to fine, diffuse granules)

May have pseudopods

May have vacuoles

 

Normal % in Bone Marrow: 2%2

 

Normal % in Peripheral Blood: 3-11%2


References:

1. Landis-Piwowar K. Granulocytes and Monocytes. In: Clinical laboratory hematology. 3rd ed. New Jersey: Pearson; 2015. p. 97-121.

2. Rodak BF, Carr JH. Monocyte maturation. In: Clinical hematology atlas. 5th ed. St. Louis, Missouri: Elsevier Inc.; 2017. p. 55-64.

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