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Questions and Answers
What type of blood group would a person have if their blood shows agglutination with anti-B serum only?
What type of blood group would a person have if their blood shows agglutination with anti-B serum only?
- Type B (correct)
- Type A
- Type AB
- Type O
Which blood group does not produce any antibodies in the serum?
Which blood group does not produce any antibodies in the serum?
- Type B
- Type A
- Type AB (correct)
- Type O
If the result from testing an unknown blood sample shows no agglutination with either anti-A or anti-B sera, which blood type is it?
If the result from testing an unknown blood sample shows no agglutination with either anti-A or anti-B sera, which blood type is it?
- Type B
- Type A
- Type AB
- Type O (correct)
In the ABO blood grouping, what is the role of the antibodies present in the serum?
In the ABO blood grouping, what is the role of the antibodies present in the serum?
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What antigens would you expect to be present in a blood sample classified as Type A?
What antigens would you expect to be present in a blood sample classified as Type A?
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Study Notes
ABO Blood Grouping
- The basis for blood grouping is the antigen-antibody reaction.
- A specific antigen reacts only with its corresponding antibody, resulting in agglutination (clumping of red blood cells).
- ABO blood grouping is based on the presence or absence of antigens A and B on red blood cells.
- Blood Type A: Contains antigen A
- Blood Type B: Contains antigen B
- Blood Type AB: Contains both antigens A and B
- Blood Type O: Contains neither antigen A nor antigen B
- Antibodies in the ABO system are present in the serum from birth.
- Blood Type A: Contains anti-B antibodies
- Blood Type B: Contains anti-A antibodies
- Blood Type AB: Contains no antibodies
- Blood Type O: Contains both anti-A and anti-B antibodies.
- The presence or absence of agglutination reactions, when tested with anti-A and anti-B sera, determines the blood group.
- If agglutination occurs with anti-A serum, the blood group is A.
- If agglutination occurs with anti-B serum, the blood group is B.
- If agglutination occurs with both anti-A and anti-B serum, the blood group is AB.
- If no agglutination occurs with either anti-A or anti-B serum, the blood group is O.
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