2
$\begingroup$

In a textbook, I encountered a notation used when writing blood groups down, which was "I" with the blood group type as a superscript. I was curious as to why the letter "I" is used in this notation and what it means. E.g. Iᴬ and Iᴮ.

Thanks.

$\endgroup$
2
$\begingroup$

Those are names of alleles involved in the ABO blood group system. The “I” stands for isoagglutinogen which is an antigen that causes agglutination of blood cells when reacting with a specific antibody (an isoagglutinin).

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.