So, if your blood has the Rh D antigen, then your blood group is Rh positive, else it is Rh negative.
The reason for the importance of this antigen is that a mismatch in the D antigen can prove fatal during blood transfusion, just like it does in AB antigen mismatch.
This will ensure that the fetus remains unaffected by the fact that the mother’s blood is Rh negative and ensures a safe delivery of the child.
Recently came across this theory which suggests that those with Rh negative blood group might be the descendants of ancient alien astronauts. Around 85% of humans are Rh positive, which means they have Rh D antigen in their blood, only around 15% are Rh negative which means they do not have Rh D antigen in their blood.
This is also the reason why blood groups like O-ve are very rare.
Most humans have Rh D antigen, and are hence Rh positive. So what caused this mutation where some humans stopped having this antigen in their blood? It is interesting to note that Rh -ve or the absence of Rh D producing genes is common in the European population, even though it is rare in rest of the world.
There is a possibility that a mother whose blood group is Rh negative, carries a child whose blood group is Rh positive, and if mother’s blood comes in contact with the fetus blood, then the mother’s immune system upon finding an antigen foreign to its body, Rh D antigen, will produce antibodies against the Rh parties in the fetus blood which can prove fatal to the fetus.
So, if the father is Rh positive and mother is Rh negative, then extra care should be taken during pregnancy.
Which once again is a common pattern when attempting to get answers from mainstream medical practitioners, in regard to the unique properties of the Rhesus Negative bloodtype and any associated health problems.So A ve means a blood group which has A antigen and Rh D antigen.O-ve means a blood group which has neither A nor B antigens, nor Rh D antigen.However, our immune system is trained to ignore these self antigens (the antigens which are generated inside our body).The human blood group classification is based on these antigens on our Red Blood Cells (RBC), and there are around 32 Human Blood Group classifications based on the various antigen groups.However if a person with B or AB blood group is given to a person whose blood group is A, then the recipient’s body will attack the B antigens in the received blood as it has not been trained to ignore B antigens.Similarly if A or AB or B blood is given to a person whose blood group is O, then it will attack both A and B antigens. And it is for this reason that AB is Universal Recipient as the person’s blood will reject neither A or B antigens, while the O group is Universal Donor as it has no A or B antigens which can be rejected by the recipient’s body.AB-ve means a blood group which has both A and B antigens, but has no Rh D antigen.Which is why in case of an emergency when there is no time to match for any other antigen reactions, O-ve is the safest blood transfusion that can be done without any prior tests because of the absence of A, B and Rh antigens in it. If you are rh negative and your partner is rh negative, the only possible outcome for all the children you have together is for them to turn out rh negative as well.In that case the rh negative pregnant woman will not need the Anti-D shot and the child will not be affected by you being rh negative.