BOMBAY “O” BLOOD GROUP

Bombay Blood Group : It is Called Bombay Blood Group becauSe Bombay Blood Group was first discovered in Bombay. When Bombay Blood Group was first encountered, Bombay Blood Group was found not to be of either group A or B and so was thought to be of Group O. But on further test, Bombay Blood group did not match even for O-ve or O--ve because of the absence of Antigen 'h'.

This rare genotype was labelled as the Bombay Blood Group. If a Bombay Blood Group recipient is not transfused the blood of a Bombay Blood Group person, it can lead to a haemolytic transfusion reaction, which can be fatal and lead to death

Bombay phenotype (Bombay Blood group ) is a rare blood group which shows absence of A,B,H antigens on red cells and presence of anti-A, anti-B and anti-H antibodies in serum.

The rare individuals with Bombay phenotype do not express H substance on their red blood Cells and therefore do not bind A or B antigens. Instead, they produce antibodies to H substance (which is present on all red cells except those of hh phenotype) as well as to both A and B antigens and are therefore compatible only with other hh donors .

Individuals with Bombay phenotype blood groups can only be transfused with blood from other Bombay phenotype individuals. Given that this condition is very rare to begin with, any person with this blood group, who needs an urgent blood transfusion, may be simply Out of luck, as it would be quite unlikely that any blood bank would have any in stock.


If a Bombay Blood Group recipient is not transfused the blood of a Bombay Blood Group person, it can lead to a haemolytic transfusion. 

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