What antibodies are formed by a Bombay individual?

A Bombay individual, who has the rare phenotype characterized by the absence of H antigen—a precursor for A and B antigens—produces specific antibodies due to this unique genetic makeup. Individuals with the Bombay phenotype, designated as Oh, possess both anti-A and anti-B antibodies, as well as anti-H antibodies.

The absence of the H antigen leads to the development of these antibodies because the immune system recognizes the missing H antigen as foreign. Therefore, anyone with the Bombay phenotype will produce antibodies that target all three components: A, B, and H antigens. This results in the formation of anti-A, anti-B, and anti-H antibodies, as the individual's body is unable to produce A or B antigens and reacts against these antigens associated with other blood types.

While anti-A and anti-B are included in this combination, it’s the presence of anti-H that is distinctive for Bombay phenotype individuals, making the comprehensive summary of antibodies formed by a Bombay individual critical for understanding how they interact with other blood types and their implications in transfusion medicine.