Human blood is composed of red blood cells and white blood cells, platelets and plasma. Each red blood cell are either of type A Or Type B Or type AB Or Type O Each of these types may exhibit a protein called rhesus factor Rhesus factor Is an inherited trait refers to a protein found on the surface of red blood cells.If the blood contains a Rhesus factor person is A + Or B +, For example. And if the person is pregnant towards this protein is therefore A - Or B - For example. Research and Statistics emphasizes that 85 per cent of the world's population have Rhesus factor.
When a man marries a woman be a factor rhesus have one of the following possibilities:
1 to be a positive factor pair and wife positive factor (in this case there are no problems).
2 to be a negative factor pair and wife negative factor (in this case there are no problems).
3 to be a negative factor pair and wife positive factor (in this case there are no problems).
4 to be a positive factor pair and wife negative factor. Then may occur very serious problems, such as the fetus to die or generates With yellow if the fetus is positive, ie, no protein Rh On the surface of blood cells, but not the first-born.
Antibodies often do not pose a problem during the first pregnancy. Because the mother's blood and the blood of the fetus do not mix during the pregnancy, but at birth, and in the case of rupture of the placenta, may mingle even a single drop of blood fetal blood with the blood of the mother. After mixing the mother's immune system reads this strange blood, the rhesus factor found on red blood cells present, began to attend immune antibodies against him. However, these antibodies have no effect now, because the first baby came out and survived. But with the second pregnancy with a baby Rh Positive, the antibodies are attacking the red blood cells of the child may threaten the life of the fetus and he dies in his mother's womb or out injured jaundiced (yellow) or severe anemia. Along with other symptoms requiring fast processing in the case.
التسميات
Genetic