Mary

1. Community
2. Study Group
3. What is the Rhesus (or Rh) factor?

If your blood is Rh positive, you have antigens in your blood which were first discovered in the Rhesus monkey (hence the name). If your blood is Rh negative, you do not have this type of antigen. ...

1. Community
2. Study Group
3. What is the Rhesus (or Rh) factor?

P.S. I forgot to mention that the Rh factor is not dependent on your A, B, AB, or O blood type, though it is similar