Blood Typing

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What is blood typing?

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Blood typing is a laboratory test used to determine an individual's blood group based on the presence or absence of specific antigens on the surface of red blood cells.

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What are the main blood types?

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The main blood types are A, B, AB, and O, which can also be classified as Rh-positive or Rh-negative.

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What is the Rh factor?

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The Rh factor is a protein that can be present on the surface of red blood cells. If present, the blood type is Rh-positive; if absent, it is Rh-negative.

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What are antigens?

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Antigens are substances that can trigger an immune response. In blood typing, they are found on the surface of red blood cells.

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What are antibodies?

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Antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses. In blood, they can react against specific antigens.

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What blood type has A antigens and anti-B antibodies?

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Blood type A has A antigens on the surface of red blood cells and anti-B antibodies in the plasma.

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What blood type has B antigens and anti-A antibodies?

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Blood type B has B antigens on the surface of red blood cells and anti-A antibodies in the plasma.

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What blood type has both A and B antigens?

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Blood type AB has both A and B antigens on the surface of red blood cells and no anti-A or anti-B antibodies in the plasma.

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What blood type has no A or B antigens?

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Blood type O has no A or B antigens on the surface of red blood cells.

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Which blood type can donate to all other blood types?

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Blood type O- is considered the universal donor because it has no A, B, or Rh antigens.