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Questions and Answers
What indicates a blood type of A when testing with serum?
What indicates a blood type of A when testing with serum?
- Agglutination with anti-B serum
- Agglutination with anti-A serum (correct)
- No reaction with either serum
- Agglutination with both sera
Which blood type has no antibodies present in its serum?
Which blood type has no antibodies present in its serum?
- Type AB (correct)
- Type O
- Type B
- Type A
A sample shows no reactions with anti-A or anti-B sera. What is the blood type?
A sample shows no reactions with anti-A or anti-B sera. What is the blood type?
- Type B
- Type AB
- Type O (correct)
- Type A
Which blood group can receive blood from type O without any reactions?
Which blood group can receive blood from type O without any reactions?
What antibodies are present in type B blood?
What antibodies are present in type B blood?
If a blood sample shows complete agglutination with both anti-A and anti-B sera, what is the blood type?
If a blood sample shows complete agglutination with both anti-A and anti-B sera, what is the blood type?
What antigens are present in type O blood?
What antigens are present in type O blood?
Which type of blood has anti-A antibodies?
Which type of blood has anti-A antibodies?
Which characteristic is true for the ABO blood group system?
Which characteristic is true for the ABO blood group system?
What does agglutination with anti-A and not with anti-B indicate?
What does agglutination with anti-A and not with anti-B indicate?
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Study Notes
ABO Blood Grouping
- The ABO blood grouping system is based on the presence or absence of antigens A and B on red blood cells.
- The presence of antigens A and B is determined by agglutination reactions with known antibodies.
- Agglutination occurs when an antigen reacts with its corresponding antibody.
- Blood type is determined by the presence or absence of agglutination with anti-A and anti-B sera.
- The table below summarizes the reactions observed in the ABO blood grouping system:
ABO Blood Grouping System
- Blood Group A: Contains antigen A and anti-B antibody.
- Blood Group B: Contains antigen B and anti-A antibody.
- Blood Group AB: Contains both antigens A and B but no antibodies.
- Blood Group O: Contains no antigens but has both anti-A and anti-B antibodies.
Example Reactions
- Sample 1: Agglutinates with anti-A and anti-B sera, indicating blood group AB.
- Sample 2: Does not agglutinate with anti-A sera but agglutinates with anti-B sera, indicating blood group B.
- Sample 3: Agglutinates with anti-A and anti-B sera, indicating blood group AB.
- Sample 4: Doesn't agglutinate with either anti-A or anti-B sera, indicating blood group O.
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