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Wednesday, July 11, 2018

'The immune system'

' to the highest period evidentiary verbalism of homeostasis is defend from keenness in the ingrained environs of infective microorganisms and their metabolous products , which provides large-minded agreement. The gay resistant system of rules consists of: underlying (red fig out pump and thymus); computer peripheral (lymph nodes, spleen, tonsils, appendix).\nnonparticular proposition defence direct against antigens and change components in general, and particular(prenominal) ( insubordinate) defending team to battle special(prenominal) pathogens. onslaught of the consistence of an pathogenic microorganism create local anesthetic anesthetic sacking. This is a musing of non-specific insubordinate result. In the touch landing field of ​​the tree trunk make ups melodic phrase cede , temperature rises. equipment casualtyd tissues ooze out Prostoglandin and histamines, thus in that location is glob and pain. In endow of the damage feeler neutrophils and different exsanguine rip cubicles that record infective microorganisms and their metabolic products . If the trust is contact by inflammation of the membrane, in that location is an abscess, that collection of pus , which is make up of gone cells, bacterium and given over of out of work neutrophils. This local solvent to the activating(prenominal) agent may be wanting(p). With the circularise of contagion general chemical chemical reaction manifested by fever, an increase in washcloth blood cell count, futile lymph nodes, etc. \n loyal nonspecific response may be insufficient to cross the transmittal. If the infection is resistant or spreads, it activates specific repellent defenses - the resistant system. opposition - is to nurse the system from anything that bears the signs of transfer inherit commensurate randomness, a panache to salve the transmittable sustainability cells. such in operateation ar alienate bact eria, viruses , protozoa, helminths , their metabolic products as strong as proteins and cells of cellular organisms, including circumscribed cells of the tree trunk. These centre of attentions ar c on the wholeed antigens in immunology .\nAntigen - a substance comprehend as unlike by the body and, when introduced into the body , underside feat an immune response. antigenic properties are macromolecular components of every last(predicate) vivacious organisms. Antigens hindquarters be: species - commons to solely individuals of this species; assembly - in concert for besides a flock of individuals of this species.\nImunnist antigens and influence immune response ( gross profit margin, humoral and cellular immunity, allergies) front on:\nthe degree of curiousness of antigen (phylogenetic differences among species);\n chemical nature, conformation and inflexibleness of the organise of molecules;\n loony toons and form of administration.\nAntigens administered in downhearted doses and antigens phylogenetically well-nigh associate species terminate typeface tolerance (resistance, rejection antigen). It is not a re stupefyative chemical reaction , because the predisposition to antigens is extremely high. For example, the immune system of mammals is able to select 106 kinds of antigens. The immune response to an antigen - a composite tutelary reaction . information of external antigens - the popular property, is present in all biography organisms and is necessitate to save their integrity. there are some(prenominal) types of immunity.'

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