Bill wants to determine his blood type, so he takes a few drops of blood from a
ID: 177837 • Letter: B
Question
Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A serum but not with the anti-B. Therefore, which of the following is true? Bill could receive type B blood in a transfusion. Bill could donate blood to an individual with type B blood. Bill is Rh positive. Bill's plasma contains B antibodies. Bill's plasma would cross-react with type O red blood cells. In an experimental situation focused on the development of a new vaccine, mice were injected with a viral antigen. Their plasma was removed in order to detect the presence of antibodies. This is an example of innate immunity. active immunization. passive immunization. natural immunity. autoimmunity. Milly has just received a kidney transplant and is taking cyclosporin A, a drug that suppresses cytotoxic T cells. What does this medication do? prevents inflammation from destroying the transplanted kidney depresses hematopoiesis prevents rejection increases the number of antibodies in the blood None of the answers are correct.Explanation / Answer
76.Blood cells agglutinate when mixed with anti-serum A but not with anti B,therefore following answer is true:
Ans:d)Bill plasma contains B antibodies.
Anti-serum A (means antibodies against A antigen) and his blood group A(which contains antigen A),will agglutinate.Therefore his blood group is A, which means it will have antigen A and antibodies for B.
77.Mice when injected with viral antigen their plasma was detected for the presense of antibodies.This is an example of
Ans:b)Active immunisation.
Body's immune system is forming antibodies against the foreign antigen.
78.Action of Cyclosporin is:
Ans:(c) prevents rejection.
When kidney transplant is carried out,the immune system either fights or rejects a transplanted organ beacuse the immune system treats the new organ as an invader(foreign body).Cyclosporin A lowers body's immune system and it is used to prevent organ rejection.
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