Practice question
Question
Hemolytic disease of the newborn develops when maternal IgG antibodies specific for fetal blood-group antigens cross the placenta and destroy fetal red blood cells. The disease is called
Explanation
This outcome reflects antibody structure, where immunoglobulin fold with antiparallel beta-sandwich provides antigen binding. Option A captures this correctly because it demonstrates immune recognition architecture, consistent with textbook descriptions and experimental observations in immunology.
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