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 blushful logical argument cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the strain convocation system. Some of these antigens argon also present on the surface of other vitrines of cells of various tissues. Several of these red product line cell surface antigens that stem from one allele (or minute closely linked genes), collectively form a blood throng system.[1] Blood types are inherited and represent contri stillions from both parents. A total of 30 human blood group systems are now recognized by the International fellowship of Blood Transfusion (ISBT).[2] Many pregnant women carry a fetus with a different blood type from their own, and the give can form antibodies against fetal RBCs. Sometimes these maternal antibodies are IgG, a small i mmunoglobulin, which can cross the placenta and event haemolysis of fetal RBCs, which in turn can lead to haemolytic disease of the newborn, an illness of low fetal blood counts that ranges from cushy 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 potential combinations of blood-group antigens.[2] Across the 30 blood groups, over 600 different blood-group antigens bring been found,[4] tho many of these are very rare or are mainly found in certain heathenish groups. Almost always, an individual has the same bl! ood group for life, but very rarely an individuals blood type changes through emergence or suppression of an antigen in infection, malignancy, or autoimmune disease.[5][6][7][8] An corporeal 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 viridity cause in blood-type change is a bone nubble transplant. Bone-marrow transplants...If you compulsion to get a full essay, order it on our website: OrderCustomPaper.com

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