This rarest of blood types is defined by an unusual Rh factor that is neither ... have been confirmed to possess this blood ...

If you don't have Rh proteins on the surface of your red blood cells, you have negative blood. One of the easiest and most effective ways to determine your blood type is to have your doctor ...

Medical emergencies strike without warning. Whether it's a car accident, severe allergic reaction, or unexpected surgery, ...

If Neanderthal women mated with Homo sapiens or Denisovan men, there was a high risk of newborns having neonatal hemolytic ...

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 ... ones in RhoGAM are a type that won't cross ...

but someone with type B blood will have antibodies that attack type A antigens, for example. Another important antigen is the ...