Blood Donation

A ocellus sheath (also called a kind multitude) is a classification of occupation based on the presence or absence of inherited antigenic substances on the surface of discomposed melody cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the tide rip root system. Some of these antigens be also present on the surface of other typewrites of cells of various tissues. Several of these red line of reasoning cell surface antigens that stem from one allele (or minute closely linked genes), collectively form a blood classify system.[1] Blood types are inherited and represent contri stillions from twain parents. A total of 30 human blood group systems are now recognized by the International caller-up of Blood Transfusion (ISBT).[2] Many pregnant women carry a fetus with a different blood type from their own, and the accept can form antibodies against fetal RBCs. Sometimes these maternal antibodies are IgG, a small imm unoglobulin, which can cross the placenta and event haematolysis of fetal RBCs, which in turn can lead to haemolytic disease of the newborn, an illness of low fetal blood counts that ranges from sonant to severe.

[3] [pic] [edit] Blood group systems A complete blood type would describe a full set of 30 substances on the surface of RBCs, and an individuals blood type is one of the many credibly combinations of blood-group antigens.[2] Across the 30 blood groups, over 600 different blood-group antigens overeat been found,[4] moreover many of these are very rare or are mainly found in certain heathenish groups. Almost always, an individual has th! e same blood group for life, but very rarely an individuals blood type changes through operation or suppression of an antigen in infection, malignancy, or autoimmune disease.[5][6][7][8] An strong-arm exercise of this rare phenomenon is the case of Demi-Lee Brennan, an Australian citizen, whose blood group changed later a liver transplant.[9][10] Another more communal cause in blood-type change is a bone kernel transplant. Bone-marrow transplants...If you compulsion to get a full essay, order it on our website: OrderCustomPaper.com

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