This antigen is present in 85% of people (those with an Rh-positive blood group). Similarly, its absence characterizes the Rh ...

Nebraska Republicans introduced a bill that imposes invasive and unnecessary requirements for physicians to prescribe ...

Human populations that left Africa evolved quickly whereas Neanderthals stayed the same, according to an analysis of blood ...

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 ...