5. Anti-Le (bh) antibodies react with ceills of a. O b. A c. A 6. Which of the f
ID: 199862 • Letter: 5
Question
5. Anti-Le (bh) antibodies react with ceills of a. O b. A c. A 6. Which of the following antibodies would not be classifed as a cold agglutinin? a. anti-Le(a) b. anti-P c. anti-M d. anti-Fy 7. The terminal sugar responsible for A specificity is: a. N-acetyl-D-glucosamine b. N-acetyl-D-galactosamine c. L-fucose d. D-galactose If Rh negative (ced/cde) red cells are transfused into an Rh positive person of the genotype CDe/CDe, the antibody MOST ikely to be developed is: 8. a. anti- b. anti-d c. anti-e d. none, since the donor is Rh negative 9. Saliva from a group O Le(a+b-) individual usually contains: a. some Le substances b. much H substances c. some A and H substances d. some Le substances for a person who is Rh negative 10. Which of the following sets of reactions is most typical anti-D anti-C anti-E anti-c d.Explanation / Answer
Answer:
5. Lewis antibody system is crucial and identified during prenatal screening or pre-transfusion. The Lewis antibody types Lea is the common one and Leb exists in further to forms. Leb+ reacts with an A2 type of cells while Lebh reacts with O type (option a).
6. Common cold agglutinins are anti-IgM, anti-P1 and anti-Lea but not anti Fya (option d)
7. Option b. N-acetyl galactosamine is added to H substance that results in A antigen (A blood group)
8. option d since the donor is Rh negative
9. option d Lea substances are present in saliva of O Le (a+b-) individuals
10. Option C Rh negative persons contain anti-D in common and not anti-E
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