Sonia has just been in an accident and needs a blood transfusion. Why does the nursing staff need...

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Sonia has just been in an accident and needs a blood transfusion. Why does the nursing staff need to know her blood type?

Blood Antigens:

An antigen is something (any substance, various chemical makeups) that the immune system responds to. Blood cells have antigens on them that the body recognizes as "self", therefore not triggering an immune system response. Humans have four different possible types of antigens on their blood cells: all will be marked with "type A"; "type B"; Type AB (which is A and B markers) or blood that has no A or B markers (which is called "type O").

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If a person is given blood that contains different antigen markers than their own, their body's own immune system would recognize the new blood blood...

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Blood Types: ABO System, Red Blood Cell Antigens & Blood Groups

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Chapter 13 / Lesson 5
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Blood types are determined by antigens found in red blood cells. Learn about the blood types, red blood cell antigens, agglutination, the ABO system, the blood groups, and the definitions of universal donor and universal recipient blood types.


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