Specifically, this type of blood lacks any of the 61 Rh antigens. Its distinctive factor is indeterminable, thereby earning ...

You may or may not have this factor in your blood. When present, it is found on the surface of red blood cells and you are considered to have Rh-positive (Rh+) blood type. If you have no Rh ...

A person's blood type is determined by "the presence or absence ... Additionally, there is a protein called "the Rh factor," which can also be present (+) or absent (–). These factors help ...

In addition to the blood group type, a person may also carry Rh factor on their red blood cells. A person without Rh factor has Rh- blood, while someone with it has Rh+ blood. For example ...

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 ...

The other blood types must be carefully matched to avoid adverse reactions. Each type can also be either Rh-positive (+) or Rh-negative (-), depending on whether they carry the Rh factor protein.

While most people are familiar with the ABO blood system and the Rh factor, human blood classification ... 30 per cent of the population has blood type O+, making it the most common blood type ...