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glossary:rf_factor [2012/10/16 14:40] (current)
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 +(1) An [[antigen]] that may or may notbe present on the surface of human bloodcells. If a person'​s [[blood]] has the antigen, their blood type ispositive, if they do not, it is negative. The rh factor isimportant mainly because if a woman who is Rh- conceives a child who is Rh_, themixing of their bloods in the placenta may provoke an immune reaction in the mother that can cause a life-threatening agglutination of the foetus'​blood cells.The Rh factor is so named because it was first identified in rhesus monkeys.
 +(2) An antigen found in the red blood cells of most people: those who have Rh factor are said to be Rh positive (Rh+), while those who do not are Rh negative (Rh-) Blood used in transfusions much match donors for Rh status as well as for ABO blood group, as Rh- patients will develop anemia if given R+ blood. Rh typing is also important during abortion, miscarriage,​ pregnancy, and birth, as mother and fetus may not be Rh-compatible. Rh stands for rhesus monkeys, in whose blood this antigen was first found.
 +See also RhoGAM, Rh incompatibility.
glossary/rf_factor.txt ยท Last modified: 2012/10/16 14:40 (external edit)