jca@drutx.UUCP (ArnsonJC) (08/27/85)
It is not the HgbS that is responsible for malaria "immunity". It is
due to lack of the Duffy Blood Group System genes, both a and b.
[ie. Fya-, Fyb-]. It just happens that both the HgbS genes and
Duffy {or should I say lack of} genes are both found in the same
segment of the population. {Blacks}
jillwerner@aecom.UUCP (Craig Werner) (08/29/85)
> It is not the HgbS that is responsible for malaria "immunity". It is > due to lack of the Duffy Blood Group System genes, both a and b. > [ie. Fya-, Fyb-]. It just happens that both the HgbS genes and > Duffy {or should I say lack of} genes are both found in the same > segment of the population. {Blacks} > jill The Duffy Blood Groups antigens (the ones most different between whites and Blacks) is the receptor for Vivax Malaria. The HbS/HbA mutation is for Plasmodium falcifurim malaria. They are two different diseases, but both called malaria. Incidentally, I have been told that I switched one of my HbSs with an HbA. If you saw an apparent contradiction, it was an unfortunate typo. -- CW. -- Craig Werner !philabs!aecom!werner "The world is just a straight man for you sometimes"