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The blood types of humans are broken up into 4 ABO groups and further by Rh (Positive or Negative). Therefore, there are a total of 8 Blood groups: O positive, O negative, A positive, A negative, B positive, B negative, and AB positive, and AB negative. The A and B refer to antigen or "receptors" on the red cells. Therefore, O red cells have neither A nor B antigens on their red cells, and can be given to everyone, while AB red cells have both A and B antigens, and can only be given to AB people. The reason for this is that every person has antibodies to the opposing red cell other than their own. Thus, an A type person has B antibodies, while a B type person has anti-A antibodies, and an O person has anti-A and anti-B antibodies. An AB type person can receive all types of blood. However, a compatibility test must be performed prior to transfusion, known as a crossmatch, using the recipient's serum (with antibodies) against the donor unit's cells (the antigens). If no reaction takes place, the cells are compatible with the patient and can be transfused. If there is a reaction (agglutination, or clumping of the red cells in the patient's serum) then the unit it not compatible and should not be transfused.
What else can I help you with?
Who is human blood does Bella Swan drink?
donated blood that Carlisle bought
Does science accept Christianity?
The role of science is neither to accept or reject religion. These are two separate areas of human endeavor.
I donated blood, what is a blood type?
Blood type during donations is asked because it is critical that blood types are matched. There are 4 human blood types: A, AB, B, and O. AB and B people can only accept their own blood type and O. A can receive all three other blood types. O can only receive it's own. If you get the wrong blood type you can die.
How come people with AIDS are allowed to donate blood?
They aren't hiv acquired through donated blood have been human errors and not because they are allowed to donate blood.
How are most human hair wigs donated?
Most human hair wigs are donated through Locks of Love.
How can a part of human body be donated after death?
brain
Why did the early scholars reject fossils as a mean to trace human evolution?
why did the early scholars reject fossils as a mean to trace human evolution
Does human handling of a baby goat cause the mother to reject the baby?
No. If the contact with the human is brief, the doe will still accept her kid back. If the kid has been taken away from the nanny goat for a couple days, then yes, there's a risk that the doe will reject her kid.
What are some What are facts about blood?
Drinking human blood induces vomiting. Except for vampires. Blood is never blue! Deoxygenated blood is light red and oxygenated blood is dark red. Thousands of pints of blood donated to the Red Cross during Katrina were wasted. You can buy pig blood at your local super market or butcher.
Do animals reject their young after human contact?
There is no evidence to suggest that animals reject their young after human contact. In fact, many animals are capable of forming strong bonds with their offspring regardless of human interaction.
Can people have hourse hearts?
No, the human body would reject it.
Why do doctors give pig blood to humans?
Larger and aggressive pigs are used to scare away other animals and they are also used for food.
