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 ...

nor why some people lack the protein, but an issue can arise if an Rh-negative person is pregnant with an Rh-positive fetus.

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 ...

Having the protein means RH positivity. But if you don't have the protein, you're RH negative. You don't necessarily have to have the same blood type as your baby since the baby will inherit ...