Apart from antigen A and B, there's also the antigen D.This antigen is present in 85% of people (those with an Rh-positive ...
It's a bit simplistic, but you can think of the Rh factor as a protein that is either present (positive) or absent (negative) on red blood cells. Exact percentages vary with race, but most people ...
We have studied haemoglobin (Hb) variants and blood groups (ABO, RH, and Kell) in 598 children from the Berber population ... DNA sequence variation in a negative control region 5′ to the ...