A 40 year old female patient presents with excessive bleeding. Patient gives a history of road traffic accident 5 hours ago and had a lacerated wound on lower back region. Blood grouping test reveals presence of Anti A antibody, Anti B antibody, Anti H antibody and Anti Rh D antibody in the serum. The blood group of this patient is?
Correct Answer: Bombay blood group
Description: → Apart from A< B and O RBC of type O contains large amount of another antigen called H substance.
→ H substance is genetically different from ABO but is a precursor of A and B antigens.
→ An O group individual who inherits A or B genes but fails to inherit H gene from either parent is called Oh phenotype or Bombay blood group.
Category:
Pathology
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