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 rose-colored strain cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the bank line mathematical pigeonholing system. Some of these antigens ar also present on the surface of other fictitious characters of cells of various tissues. Several of these red rent cell surface antigens that stem from one allele (or fine closely linked genes), collectively form a blood group system.[1] Blood types are inherited and represent contri stillions from both(prenominal) 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 own can form antibodies against fetal RBCs. Sometimes these maternal antibod ies are IgG, a small immunoglobulin, which can cross the placenta and event hemolysis of fetal RBCs, which in turn can lead to hemolytic disease of the newborn, an illness of low fetal blood counts that ranges from lenient 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 likelihood combinations of blood-group antigens.[2] Across the 30 blood groups, over 600 different blood-group antigens meet been found,[4] simply many of these are very rare or are mainly found i n certain cultural groups. Almost always,! an individual has the same blood group for life, but very rarely an individuals blood type changes through appendage or suppression of an antigen in infection, malignancy, or autoimmune disease.[5][6][7][8] An carnal 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 putting green cause in blood-type change is a bone marrow squash transplant. Bone-marrow transplants...If you compulsion to get a full essay, order it on our website: OrderCustomPaper.com

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