White blood cells are also called leukocytes. White blood cells are the cells that engulf and digest bacteria and fungi; and are important part of the body's defense system. White blood cells help to fight against the infection. White blood ccell are the key part of the body immune system.
There are Five types of the White Blood Cell:
- Neutrophils
- Eosinophils
- Basophils
- Monocytes
- Lymphoctes
In a normal adult body there are 4,000 to 10,000 (average 7,000) WBCs per microliter of blood. When a germ does appear, the white blood cells have a variety of ways by which they can attack. Some will produce protective antibodies that will overpower the germ. Others will surround and devour the bacteria.A consistently high number of white blood cells is a symptom of Leukemia, a cancer of the blood. A Leukemia patient may have as many as 50,000 white blood cells in a single drop of blood. Disoders due to white blood cell count include infectious and inflammatory diseases; leukemia and lymphoma; and bone marrow disorders.
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