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Type O blood does not contain A or B antigen, they contain antibodies only. Having no antigens it will be safe to mix it with other blood type as it will not trigger production of antibodies. Thus makes type O as the universal donor as it can be given to any blood type without harmful reactions. For more safety reasons there is a process done to wash out the type O blood antibodies before transfusing to reduce the possible risks of its antibodies reacting with antigen of other blood types. .If there will be any reaction, it will be at the most minimum extent as the reacting antibody in it would be limited and there will be no further antibody production considering it is out of its original body.

Being a recepient, it can receive only type O because it has antibodies which will immediately react with the entry of other blood types containing antigen. The more antigen as the triggering factor, the more antibodies will be produced by type O blood. Thus it won't be possible for the type O to receive blood of type A, B, and AB.♥

2006-10-23 08:46:30 · answer #1 · answered by ♥ lani s 7 · 1 0

The rule is this - you can't receive what you don't already have. There are two antigens involved - A and B. Type O blood has neither one.

Type AB can receive anything - A, B, AB, or O - because no other blood type has an antigen they don't already have.

Type B can receive B or O, but cannot receive A or AB because these contain an A antigen that they don't already have.

Type A can recieve A or O, but not B or AB, since these contain a B antigen that they don't already have.

Type O cannot receive anything with an A antigen or a B antigen, because they don't have either one. That rules out types A, B and AB. So type O can receive only type O. But if you look back over the above statements, you see that any of them can receive type O, so type O can be given to any type. Type O is therefore known as "the universal donor", and type AB is known as "the universal recipient".

2006-10-21 16:00:10 · answer #2 · answered by PaulCyp 7 · 1 0

Only people with O negative blood can donate to people with all other blood types. The reason is two-fold: first, type O blood lacks the "A" and "B" antigens that determine the other blood types, so there's no risk of rejection when someone accepts O blood. Second, O negative blood lacks the Rh antigen which is normally present in the "positive" blood types. So, in the case of O negative blood, the blood cells don't have any antigens that could trigger an immune response in someone with a different blood type.

People with type O blood can only receive type O blood for the same reason. For example, if they receive type B blood, it will trigger an immune response (rejection) because the B antigen is not compatible with that person's type O blood. The body would see the B blood as "foreign" and start attacking it.

2006-10-21 14:27:48 · answer #3 · answered by Anonymous · 0 0

It has to do with antigens - things on the red blood cells that the body reacts to.

If you are type O, you have no antigens. So, nothing to react to, and anybody can have your blood.

However, if you are type O, you will have antibodies against both A and B antigens. Type A, B and AB blood will have antigens for your antibodies to attack. Then you get a (possibly fatal) transfusion reaction.

2006-10-21 09:41:53 · answer #4 · answered by Pangolin 7 · 2 0

only group "o" washed rbc and not whole blood, can be transfused to a person of unknown(in emergency cases) or a person with a, b, or ab blood type.
the serum of the o blood has the a and b antibodies (which will agglutinate/react with the red blood cells with a, b, and ab antigen. all blood groups (except o) has a, or b antigen or both.

2006-10-21 15:12:21 · answer #5 · answered by raymund 2 · 0 0

Okay:

The reason that a type "A" person cannot have type "B" blood, is because the type "B" blood has antibodies against them and will attack their type "A" blood. Does that make sense? The reverse is also true.

When someone recieves type "O" blood, it does not have any A or B antibodies, so it will not harm them. However, if they HAVE type "O" and they recieve type "A" or "B," the antibodies will hurt them. Does that make sense?

2006-10-21 09:42:21 · answer #6 · answered by Heidi 7 · 0 0

Not true except in emrgencies! Many more factors are used because of potential problems. But "ABO blood type" has reached the newspapers and so is great for films. (Which make life so simple! and fictional...)

2006-10-21 09:48:13 · answer #7 · answered by Anonymous · 0 0

sure you can. O+ blood suits any blood group. people with O+ blood can donate blood to any person with any blood group. hope i helped.

2016-05-22 08:13:48 · answer #8 · answered by Anonymous · 0 0

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