How does the I blood group system affect the expression of ABH antigens on red blood cells?

A It enhances the expression of ABH antigens
B It reduces the expression of ABH antigens ✓
C It has no effect on ABH antigen expression
D It masks the expression of ABH antigens

Explanation

The I blood group system is associated with a reduction in the expression of ABH antigens on red blood cells, which can affect the results of blood typing and crossmatching tests.

Source

Specialized medical literature and research studies
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium