White Blood Cells (WBCs)

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The page below is a sample from the LabCE course Normal Peripheral Blood Cells. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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White Blood Cells (WBCs)

WBCs can be divided into two groups: mononuclear cells and polymorphonuclear cells with granular cytoplasm, also known as granulocytes. WBCs are involved in the body's defense mechanisms against infection.

The cell shown in the upper image is a mononuclear cell, in this case a monocyte. The cell shown in the lower image is a granulocyte, in this case a neutrophil. These cells will be presented in much more detail later.