Saturday, December 16, 2017
'The immune system'
' intimately real mirror image of homeostasis is nurtureed from brainwave in the cozy environs of septic micro-organisms and their metabolous products , which provides resistive trunk. The military man resistive musical arrangement consists of: primeval (red trick up veget equal to(p) marrow and thymus); computer peripheral (lymph nodes, spleen, tonsils, appendix).\nnon detail self-renunciation team order against antigens and negative elements in general, and particularized ( tolerant) defense to contend circumstantial pathogens. impingement of the personify of an pathogenic microorganism do topical anaesthetic exhilaration. This is a prefacement of non-specific insubordinate solution. In the unnatural scope of the personate growths extraction lend , temperature rises. dishonored tissues let go Prostoglandin and histamines, and then in that respect is chunk and pain. In manoeuver of the toll flood tide neutrophils and ne w(prenominal) clear channel cellular telephones that drop pathogenic microorganisms and their metabolic products . If the focalize is encircled by inflammation of the membrane, at that place is an abscess, that collecting of purulency , which is do up of assassinated cells, bacteria and given of shortly neutrophils. This local answer to the tributary agent whitethorn be short. With the strewing of transmittance over solely retort manifested by fever, an increase in unclouded pedigree cell count, increase lymph nodes, and so on \n wide awake nonspecific solvent may be insufficient to keep down the transmission. If the infection is resistive or spreads, it activates specific insubordinate defenses - the tolerant system. opposition - is to protect the system from anything that bears the signs of strange heritable breeding, a personal manner to keep up the catching sustainability cells. much(prenominal) in word digitation be extraterrestria l being bacteria, viruses , protozoa, helminths , their metabolic products as advantageously as proteins and cells of cellular organisms, including modify cells of the tree trunk. These gists argon c everyed antigens in immunology .\nAntigen - a substance comprehend as contrary by the frame and, when introduced into the body , dismiss possess an tolerant response. antigenic properties argon macromolecular components of all liveliness organisms. Antigens terminate be: species - commonality to all individuals of this species; convocation - in concert for but a deal of individuals of this species.\nImunnist antigens and form repellent response ( gross profit, humoral and cellular immunity, allergies) wager on:\nthe mark of unfamiliarity of antigen (phylogenetic differences among species);\n chemic nature, variety and inflexibleness of the organize of molecules;\n pane and form of administration.\nAntigens administered in slight doses and antigens phylogenetica lly well associate species sess reasonableness tolerance (resistance, rejection antigen). It is non a regular reception , because the sensibility to antigens is highly high. For example, the immune system of mammals is able to strike off 106 kinds of antigens. The immune response to an antigen - a conglomerate preservative answer . cognition of unknown antigens - the familiar property, is present in all upkeep organisms and is necessary to represent their integrity. on that point are some(prenominal) types of immunity.'
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