Sunday, February 21, 2016

The immune system

Humoral opposition is provided by peculiar(prenominal) macromolecules that function in internal form fluids. Blood plasm contains particular(prenominal) proteins that ar able to sabotage bacterium and unhealthful products of their life, coming in physical structure fluids. It give the sack be ecumenical ( non-specific ) or be specific to finicky antigens. Examples of humoral claim in the brass of interferon and antibodies. Interferon - nonspecific antiviral drug granting immunity compute , which is produced in the physical structure cells and secreted into the seam plasma . It is a protein with a molecular incubus of 25,000 - 110,000 . It provides a normal resistive repartee, neutralizing the proceeds of all the viruses and toxins. \nAntibodies\nIn summing up to the prevalent auspices of the protein is all the same sent . It is prohibited-of-pocket to the fact that in the body thither argon modified proteins that act nevertheless against real pathoge ns. These be called antibodies. Antibodies - specific orbiculate proteins secreted by the body in response to specific antigens and ar able to say with them specifically .\nAntibodies generated and allocated special type of sinlessness ocellus cells that are in the profligate and lymph. The binding of antigen to the correspond antibody leads to the formation of repellent tangledes. This reaction is delinquent to the complementarity of the interacting structures and is caused by aquaphobic , hydrogen and some other bonds. An indication of complex formation of antigen - antibody is coagulation ( agglutination , recklessness ), neutralizing toxins, bacteria immobilization others.\nIn addition to protecting the take aim of special macromolecules , in that respect is also protection at the cellular level - cellular immunity. The main component in this persist white phone line cells - leukocytes. He launch that white blood cells, its ability to amoeboid movement , su ckle and digest pathogens them. This phenomenon occurs on the weapon of phagocytosis (from the Grecian . Phagos - devour). White blood cells, which are equal to(p) of phagocytosis are called phagocytes. Phagocytes are nonspecific save destruction of infect cells , they also offset dead cells , bacteria and foreign bodies . The largest among the phagocytic ability of leukocytes are neutrophils and monocytes.\nOther resistant cells - T cells that bring on in the thymus gland ( thymus ), trusty for the destruction of plainly a authoritative type of micro-organisms or residual antigens. The mechanism of action of T lymphocytes is rather intricate , and they are shared into several species ( cause of death cells , helper , suppressor ). Immunity corporation occur irrespective of human encumbrance ( inborn immunity ), but may be the result of bionic immunization ( hokey immune scheme ). Depending on the origin tremendous: pictorial ingrained immunity ; natural ac quired immunity ; stilted active immunity ; ersatz peaceable immunity.\nIn the instance of a natural innate immune antibodies present in the body from birth. Acquired natural immunity may occur aft(prenominal) the transfer of certain diseases. For example , a person who suffered measles, poulet pox , whooping spit up , usually re sick. The immune system remembers the causative microorganism and prevents subsequent infection. Artificial immunization is carried out to prevent diseases or their treatment. Active artificial immunity arises from the vaccine - injection of vaccine ( from Lat . Vaccinus - awe ).

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