How does the Ii blood group system impact the interpretation of blood typing results?

A It affects the expression of ABO blood group antigens
B It influences the secretion of soluble blood group substances ✓
C It modifies the expression of Rh blood group antigens
D It has no significant impact on blood typing results

Explanation

The Ii blood group system involves enzymes that affect the structure of carbohydrates on red blood cells, which in turn can influence the secretion of soluble blood group substances and thus impact the interpretation of certain blood typing results.

Source

Hematology reference materials
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: medium