Question

what are differenct types of WBC's??

Answer 1

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Types of white blood cells :

Among your white blood cells are:

• Monocytes. They have a longer lifespan than many white blood cells and help to break down bacteria.

• Lymphocytes. They create antibodies to fight against bacteria, viruses, and other potentially harmful invaders.

• Neutrophils. They kill and digest bacteria and fungi. They are the most numerous type of white blood cell and your first line of defense when infection strikes.

• Basophils. These small cells seem to sound an alarm when infectious agents invade your blood. They secrete chemicals such as histamine, a marker of allergic disease, that help control the body's immune response.

• Eosinophils. They attack and kill parasites and cancer cells, and help with allergic responses.

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Answer 2

White blood cells are the cells that help the body fight infection There are a number of different types and sub-types of white blood cells which each have different roles to play.

The three major types of white blood cells are:

• Granulocytes
• Monocytes
• Lymphocytes

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Granulocytes

Granulocytes are a type of white blood cell that has small granules.

There are three different forms of granulocytes:

• Neutrophils
• Eosinophils
• Basophils

Granulocytes are so called because these cells have granules of enzymes which help to digest the invading microbes. Granulocytes account for about 60% of our white blood cells.

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Monocytes

Monocytes can develop into two types of cell:

• Dendritic cells are antigen-presenting cells which are able to mark out cells that are antigens (foreign bodies) that need to be destroyed by lymphocytes.
• Macrophages are phagocyte cells which are larger and live longer than neutrophils. Macrophages are also able to act as antigen-presenting cells.

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Lymphocytes

Lymphocytes are cells which help to regulate the body’s immune system.

The main types of lymphocytes are:

• B lymphocytes (B cells)
• T lymphocytes (T cells)

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B lymphocytes

B lymphocytes are able to release antibodies which are Y shaped proteins that bind to infected microbes or cells of the body that have become infected.

Antibodies can either neutralize the target microbe or can mark it out for attack by T lymphocytes.

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T lymphocytes

There are a number of different T lymphocytes:

Helper T cells release a protein called cytokines which help to further direct the response of other white blood cells.

Cytotoxic T cells (also known as natural killer T cells) are able to release molecules which kill viruses and other antigens.

Memory T cells will be present after the body has fought off an infection and help the body to deal more easily with any future infection of the same type.

Regulatory T cells (also known as suppressor T cells) help to regulate other T cells to prevent them targeting the body’s own cells.