The Blood has the following types - A, B, AB and O This is also accompanied by the Rh factor that may be either positive(+) or negative(-).
AB is a universal acceptor, that is they can accept blood from any donor.
O is the universal donor, that is, they can donate blood to people of any blood group.
All others donate to or accept from their blood type.
Also, note that an Rh(+) individual can donate to or accept from an Rh(+) only. The same is true for Rh(-) individuals.
Any other type of donation of blood results in the blood to coagulate - resulting in the death of an individual.
2006-08-15 04:48:40
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answer #1
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answered by Rabindra 3
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O is considered the universal donor because it lacks the certain molecular groups that can be detected as alien to your body.
First, an introduction to the ABO blood group. Let's consider O to be totally clean; it doesn't have any extra things on it; it's just the basic blood cell. A has an extra N-acetyl galactosamine, but let's just call that the extra A thing. B has an extra galactose, or an extra B thing. AB has both of these extra things.
Say that you're type A; your body is looking for extra B things that don't belong. O has no such proteins, so it doesn't get detected. Same with if you're type B. Your body is looking for extra A things that don't belong, and because O doesn't have any, it doesn't get detected.
Conversely, AB is considered the universal acceptor because both A and B things belong in that blood, so you can stick A, B, O, or AB into that without being considered alien.
Okay, that maybe was oversimplified, but hopefully understandable. I know that I didn't mention the Rhesus system (the positive/negative business), and I didn't mention the function of antibodies or antigens. If you want to know more about these, go ahead and add that as a detail to your original question.
2006-08-15 04:47:09
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answer #2
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answered by quepie 6
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There are 4 main blood types: A, B, AB, and O. A and B are both co-dominant alleles (Ia and Ib) and O is a recessive allele (i). There are also proteins on the blood which makes it positive (+) or negative (-). O- is the universal blood type because since no blood type (A, B, or AB) has O antibodies it can accept it. O- also has no proteins on it that the non-O- blood would reject so it is accepted. So if someone has AB+ blood and needed a blood tranasfusion, the blood that can be used is O+, O-, A+, A-, B+, B-. If a person with O- blood needed a transfusion, however, only O- blood could be used because it is recessive. If a positive blood type is used in someone with a negative blood type, the body would reject the blood. If someone with A- blood needed a blood transfusion and O+, B+, or A+ was used the body wouldn't recognize the proteins on the blood (+) and reject it. This is bad.
Do you understand? Feel free to email me if you have further questions. :)
2006-08-15 04:41:21
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answer #3
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answered by spuget 2
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Type O blood is a universal donor because it has no antigens in it for any type blood. So person with any type blood can be given type O blood without it causing harm to them. Even though a person with type O blood can only recieve type O blood. Hope that helped :D
2006-08-15 04:38:03
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answer #4
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answered by Ellie 4
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O type is th known giver AB type is the known taker. yet there are a range of instruments diverse than O-A-B-AB set.as an get at the same time the Rhesus set we are saying "O rh+" meaning the blood contains rhesus proteins. There some more effective regulations about this. more effective sorts of proteins and stuff.. yet in an emergency AB rh+ is the known taker and O rh- is the known giver. do no longer provide O blood to AB individual even in emergency, he might want to %ninety 9 die.
2016-11-25 19:12:50
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answer #5
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answered by ? 4
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Blood groups are named according to the coating of red blood cells with the type of a substance called antigen. If blood group is 'A' this mean one has antigen A on cells. Blood group 'B" means having antigen B on red cells. "O" mean having no antigen on red blood cells. Antigens if given from outside, which are not present in one's own body can initiate harmful reactions in the body.
"O" blood group is called as unversal donner because it has no antigen and can be given in extreme emergency to the person of any blood group. Though in routine this practice is not adviced.
2006-08-15 04:44:42
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answer #6
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answered by dpcard 2
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O- is universal, not O+
It goes like this: The + is the RH factor, the A and B are protein structures. O- is universal because any other type can accept it, it will not create a reaction.
AB+ is the universal acceptor, it can use any blood type.
-Dio
2006-08-15 04:38:54
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answer #7
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answered by diogenese19348 6
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It can be given as a transfusion to any other blood type without ill effect.
2006-08-15 04:36:25
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answer #8
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answered by devils.shed 2
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Basically, you can donate blood to anyone....but only people with your blood type can donate to you.
2006-08-15 04:37:04
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answer #9
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answered by Anonymous
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o blood group does not have any antigens like A or B so can be transfused to anyone
2006-08-15 04:38:11
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answer #10
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answered by Anonymous
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