domingo, 13 de febrero de 2011

WHAT IS THE IMMUNE SYSTEM?

The immune system is like the policeman of the human body, is mandated to protect from external aggression and internal. Why should detect, reject and fight harmful bacteria and dangerous mutations that reach the body with the intention to attack, weaken and eliminate it. When the immune system work properly, if possible, try to serve and defend the body against the flu easier, as well as infections, cancers and complicated the whole range of serious and difficult diseases. But when AIDS invades a person is what really causes the weakening of the immune system, completely disabling it is proposed, when it does lower the defenses and this helps that the diseases from entering freely.


WHAT IS THE COMPOSITION?
The immune system consists of a panel of white blood cells circulating in the blood called lymphocytes, of which there are two types: T and B.

HOW IT WORKS
The immune system is governed by a special group of T cells called T4, which is designed to regulate the action of antibodies by B cells and direct attack by T cells

How to respond?
T4 cells are responsible for collecting information and ordering immune-specific T cell proliferation and attack, also to order the B cells make antibodies.

WHERE IS?
The immune system is in the blood by lymphocytes, but also focuses on human body parts such as spleen, thymus, intestine. Lymph nodes.
 

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