Overview of the Human Immune System

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Omschrijving
White cells are motile with specialised functions. The number of leucocytes in normal blood ranges between 4,500 and 11,000 per mm3. Fluctuations occur during the day; lower values are obtained during rest. Physical exertion may cause the count to exceed 20,000 per mm3. Most of the leucocytes are outside the circulation, and the few in the bloodstream are in transit from one site to another. There are three classes of leucocytes: granulocytes, monocytes, and lymphocytes.

 

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Categorie: immuunsysteem

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