The Underlying Molecular Basis for Distinguishing Blood-Group Antigens A,B and O

question 21

Multiple Choice

The underlying molecular basis for distinguishing blood-group antigens A,B and O is _____ at the erythrocyte surface.

• A)the presence or absence of fucose in glycolipids
• B)differences in the oligosaccharide attached to the lipid ceramide
• C)structural polymorphisms in the Rhesus D antigen
• D)the levels of MHC class I and class II molecules.

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