The rhesus factor, or Rh factor, is a protein that may be present on the surface of red blood cells (RBCs). If RBCs contain the Rh antigen, they are Rh-positive, and if not, they are Rh-negative. It ...

When you’re pregnant, you may learn that your baby isn’t your type — blood type, that is. Every person is born with a blood type — O, A, B, or AB. And they’re also born with a Rhesus (Rh) factor, ...

The new noninvasive test, using a blood sample of the pregnant woman, is as reliable as the conventional test using a blood sample of the newborn. Studies on benefit and harm are still lacking. If the ...

Please provide your email address to receive an email when new articles are posted on . Few participants undergoing first trimester abortion had elevated fetal red blood cell counts. Not administering ...