What are white blood cells?

White blood cells are created in bone marrow and are a part of the immune system. White blood cells help the body identify and fight a variety of diseases and infections. The human body produces about 100 billion white blood cells each day.

There are five major types of white blood cells:

  • Basophils
  • Eosinophils
  • Lymphocytes
  • Neutrophils
  • Monocytes

Who is likely to have a low white blood cell count?

A low white blood cell count can occur in anyone. The number of white blood cells in the body can vary, depending on a person’s age, race, and gender, and if he or she has certain medical conditions.

People who are undergoing certain treatments for cancer are likely to have a low white blood cell count.

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