type B blood

biology

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July 14, 2026

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Type B blood is one of the four main blood types in the ABO blood group system, discovered by Karl Landsteiner in 1901. This system classifies blood based on the presence or absence of A and B antigens on red blood cells. Individuals with type B blood have B antigens on their red blood cells and produce anti-A antibodies in their serum.123

This antigen-antibody relationship is crucial for blood transfusions. If type A blood is given to a type B recipient, the anti-A antibodies in the recipient's blood will attack the donor's red blood cells, leading to a transfusion reaction. Conversely, type B blood can be safely transfused to individuals with type B or type AB blood. Type O blood is considered a universal donor for red blood cells, as it lacks both A and B antigens. Type B blood is prevalent in Asia.2415

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ABO blood group system
…may thus have type A, type B, type O, or type AB blood. The A, B, and O blood groups were first identified by Austrian immunologist Karl Landsteiner in 1901. See blood group.
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…may thus have type A, type B, type O, or type AB blood. The A, B, and O blood groups were first identified by Austrian immunologist Karl Landsteiner in 1901. See blood group.
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therapeutics
Blood and blood cells
…when the blood types A, B, and O were identified and cross-matching of the donor’s blood against that of the recipient to prove compatibility became possible. When blood with the A antigen (type A or AB) is given to someone with anti-A antibodies (type B or O blood), lysis of…
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…when the blood types A, B, and O were identified and cross-matching of the donor’s blood against that of the recipient to prove compatibility became possible. When blood with the A antigen (type A or AB) is given to someone with anti-A antibodies (type B or O blood), lysis of…
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Inuit
Traditional lifeways
…of Inuit people have the B blood type (ABO system), which seems to be absent from other Indigenous American groups. Because blood type is a very stable hereditary trait, it is believed that at least a part of the Inuit population differs in origin from other Indigenous American peoples.
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…of Inuit people have the B blood type (ABO system), which seems to be absent from other Indigenous American groups. Because blood type is a very stable hereditary trait, it is believed that at least a part of the Inuit population differs in origin from other Indigenous American peoples.
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