Rh factor: An antigen found on the surface of red blood cells. Red blood cells with the antigen are said to be Rh positive (Rh+). Those without the surface antigen are said to be Rh negative (Rh-).
In this regard, what is the Rh blood group?
Rh blood group system. It is the second most important blood group system, after the ABO blood group system. The Rh blood group system consists of 50 defined blood group antigens, among which the five antigens D, C, c, E, and e are the most important.
What does it mean to be Rh+ and Rh?
any of a type of specific antigen present on the surface of red blood cells, persons having inherited such antigens being designated Rh+ (Rh positive) and persons lacking them, a much smaller group, being designated Rh− (Rh negative): blood of Rh− persons is incompatible with Rh+ blood because of antibody reaction, and
What does it mean if you are Rh negative?
Everyone's blood is either Rh-positive or Rh-negative—positive means you have a certain protein (called antigens) on the surface of your red blood cells, and negative means you don't. If you're Rh-negative and baby's RH-positive, then there could be problems.
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