What is the term for the phenomenon where an individual's red blood cells express both A and B antigens, but their serum contains no anti-A or anti-B antibodies?

A Bombay phenotype ✓
B ABO subgroup
C Chimerism
D Isoimmunization

Explanation

The Bombay phenotype is a rare condition where an individual's red blood cells express both A and B antigens, but their serum contains no anti-A or anti-B antibodies.

Source

Blood Bank Manual
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: high