Human immunity system

The human body has got the self - defense system against pathogens – the immunity system. One of the component of this system is blood, honestly speaking some parts of it, that are called white cells (leucocytes). In the human body there are some kinds of white cells; one of them is lymphocyte which is responsible for creating antibodies and destroying strange cells in the body.

Various kinds of lymphocytes cooperate and fight with illness factors that come into the human. The specific role in this fighting has lymphocytes T4 (also named CD4). These ones are responsible for immunity of the body by stimulating others to produce antibodies. The person whose immunity system is healthy has got between 600 and 1500 such cells per 1 mm3 of blood.

T4 when find illnesses viruses in human body stimulate others to fight – antibodies production. Thanks to lymphocytes our body can exterminate the illness viruses, overcome different kinds of infections, destroying cancer\'s cells which are permanently produced. If the system fails, we will be immunity defenseless: even protozoa, fungi, bacteria and viruses – have opportunities to develop and cancerous cells multiply themselves and lead to cancer.

Lymphocytes are our human body protection. If any parts of the protection stop working, we are defenseless.