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 rosy job cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the melodic line radical system. Some of these antigens ar also present on the surface of other fibres of cells of various tissues. Several of these red personal line of credit cell surface antigens that stem from one allele (or skillful closely linked genes), collectively form a blood multitude system.[1] Blood types are inherited and represent contri stillions from two parents. A total of 30 human blood group systems are now recognized by the International caller-out of Blood Transfusion (ISBT).[2] Many pregnant women carry a fetus with a different blood type from their own, and the bring out can form antibodies against fetal RBCs. Sometimes these maternal antibodies are IgG, a small immunoglobulin, which can cross the placenta and event hematolysis of fetal RBCs, which in turn can lead to haemolytic disease of the newborn, an illness of low fetal blood counts that ranges from subdued 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 in all probability combinations of blood-group antigens.[2] Across the 30 blood groups, over 600 different blood-group antigens run into been found,[4] precisely many of these are very rare or are mainly found in certai n ethnic groups. Almost always, an indivi! dual has the same blood group for life, but very rarely an individuals blood type changes through attachment or suppression of an antigen in infection, malignancy, or autoimmune disease.[5][6][7][8] An corporal 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 uncouth cause in blood-type change is a bone affection transplant. Bone-marrow transplants...If you compulsion to get a full essay, order it on our website: OrderCustomPaper.com

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