Why Are Lewis Antibodies Not Generally Implicated in Hemolytic Disease

question 80

Multiple Choice

Why are Lewis antibodies not generally implicated in hemolytic disease of the newborn?

• A) Lewis antigens are well developed at birth.
• B) Lewis antibodies are IgM and cannot cross the placenta.
• C) Lewis antigens can readily dissociate from the red blood cell upon transfusion of Lewis-positive cells.
• D) Lewis antibodies do not bind complement.

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