How is Leb substance formed?
A) L-fucose is added to subterminal N-acetylglucosamine of type 1 H substance.
B) L-fucose is added to subterminal N-acetylglucosamine of type 2 H substance.
C) Lea and Leb are codominant alleles located on chromosome 19.
D) Leb is secreted into plasma in the absence of fucosyltransferase.
Correct Answer:
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Q12: Lewis cell-bound antigens absorbed from plasma onto
Q13: Which of the following may be a
Q14: Which of the following statements is false?
A)
Q15: Where are Lewis antigens found?
A) Plasma
B) Saliva
C)
Q16: A patient was phenotyped for the presence
Q18: What does the type 1 chain refer
Q19: Red blood cells that phenotyped as [Le(a-b-)]
Q20: Lewis antibodies are of what immunoglobulin class?
A)
Q21: How is Le(y) formed?
A) Fucose-B(1-4) GlcNAc is
Q22: Persons with the Kidd-null phenotype have been
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