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White blood cell

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The blood contains erythrocytes (red blood cells), leukocytes (white blood cells), platelets and blood plasma.

White blood cells help to defend the body against infectious disease and foreign materials as part of the immune system. There are normally between 4x109 and 11x109 white blood cells in a litre of healthy adult blood.

White blood cells are also called leukocytes or immune cells. As well as in the blood, white cells are also found in large numbers in the lymphatic system, the spleen, and in other body tissues.

A type of cancer in which white blood cells multiply out of control is called leukemia, of which there are several types.

There are many types of white blood cell:

Table of contents
1 External links

Granulocytes[?]

There are three types of granulocytes: neutrophils, basophils and eosinophils, named according to their staining properties.

Other White Cells

Other Tissue Cells

External links

wikipedia.org dumped 2003-03-17 with terodump