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White Blood Cells - Definition of WBC

By Pam Stephan, About.com

Updated January 10, 2008

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Blood Cell Types in a CBC

Blood Cell Types in a CBC

Illustration © A.D.A.M.
Definition: An important part of your immune system. There are several different kinds of white blood cells: granulocytes (neutrophils, eosinophils, and basophils) and lymphocytes.
Pronunciation: whyt blud cell
Also Known As: WBCs, leukocytes
Examples:
Your complete blood count (CBC) will include counts of your white blood cells. Infections and high stress can cause high counts of WBCs. Chemotherapy can put you at risk for certain types of infections.
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