White blood cells, also known as leukocytes, help fight infections and in general help the immune system. There are two basic types of leukocytes, granulocytes that process granules and a granulocytes which lack granules.
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Formation of White Cells
White blood cells are formed from undifferentiated stem cells called hematopoietic stem cells. These hematopoietic stem cells form all types blood cells. These stem cells are located in the bone marrow.
The Hematopoietic Stem Cell
The hematopoietic stem cells are self-generating and renew themselves throughout your life. They produce extraordinary quantities of blood cells. Although they account for only 1/50,000 of cells in the bone marrow, they are capable of producing up to 100 trillion new blood cells every day.
Function of White Blood Cells
White blood cells are your primary defence against infection and tissue damage. They are called effector cells and not only kill unwanted organisms, but also act like scavengers to get rid of damaged cells. The leukocytes (white blood cells) get around by what is called ameboid movement and can penetrate tissue to control problems and then later return to the blood stream.
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