This shows you the differences between two versions of the page.
glossary:rf_factor [2012/10/16 14:40] (current)
|Line 1:||Line 1:|
|+||(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.|