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It is not that special, silly, it is just rare! Not many people have it, that's were all the fuss is about. So when you get an accident and need blood transfusion, you won't be to happy with your "special ab blood"... ;)

EDIT : the above answer is totally wrong ! AB blood group is a UNIVERSAL ACCEPTOR ....isn't that special ? so God forbids if an accident happened to an AB person..he/she can accept blood from any other blood group..though now they prefer to give the same blood group...but in extreme emergency AB can accept any blood group.

moreover it is rare....AB+ is nearly 2.5-3 % of humans and AB- is 0.6-1 %

It is very special whoever you are. They can exept all the blood types such as o, a, ab, b. But on the contrary ab pnegetive can only take negetive blood. Unlike ab positive wich can take positive and negetive.

Edit number 2:EDIT you are 100% correct. but ab is good to donate blood with it (o included).it is good because it so rare and not many people donate 100% clean ab or o blood type.

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13y ago
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12y ago

Type O blood can donate to every kind of blood out there, but can only receive blood from other type O blood.

Type AB blood can receive blood from every kind of blood out there, but can only donate to other type AB blood.

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15y ago

The main difference is that Blood type O has no protein markers on its surface and has antibodies for A and B,making it the universal donor. Blood type AB does not have antibodies for A and B, so it is considered the universal recipient.

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13y ago

In cases of an emergency (may God forbid), blood type O could be given to people with any other blood type. A little clumping would occur, but it would not be enough to cause problems. Isn't that special?

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10y ago

Blood of group A is different from blood of group B by the antigens present on the surface of the red blood cells in the blood.

Here's how it goes:

  • Type A = A antigen + anti-B antibody (I hate B)
  • Type B = B antigen + anti-A antibody (I hate A)
  • If A is transfused into B, the antibodies will agglutinate the B causing "clumps"
  • If B is transfused into A, those antibodies will agglutinate the A
  • Type O blood can be GIVEN to A or B because there are not anti-O antibodies
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13y ago

both parents should be A and B with heterozygous alleles.

or both parents should be O.

those are the only options to have children with blood type O.

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Q: What are the molecular differences between type O blood and type A blood?
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