When anti B antibodies are present in the plasma and A antigens on the surface of RBCs of a person, her blood group can be:

 
1. A and AB 2. Only A
3. Only B 4. O
Subtopic:  Blood: Blood Group |
 88%
From NCERT
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A person has type A antigen on RBC and anti-B antibodies in plasma. He can receive blood from a person with blood group:

1. A and O 2. AB, A, B and O
3. B and O 4. Only O
Subtopic:  Blood: Blood Group (A,B,O) | Blood: Blood Group |
 91%
From NCERT
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To prevent eryhtroblastosis fetalis in future pregnancies:

1. Anti-Rh Immunoglobulins must be given to Rh –ve mothers at the time of each delivery
2. Anti-Rh Immunoglobulins must be given to new born at the time of each delivery
3. Rh Antigens must be given to new born at the time of each delivery
4. Anti Antigens must be given to Rh –ve mothers at the time of each delivery
Subtopic:  Blood: Blood Group (A,B,O) | Blood: Blood Group | Blood: Blood Clotting |
 86%
From NCERT
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