This antigen is present in 85% of people (those with an Rh-positive blood group). Similarly, its absence characterizes the Rh ...

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. Exact percentages vary with race, but most people ...

Many people are familiar with the ABO blood typing system ... Another important antigen is the Rh factor, which gives the "positive" and "negative" signs to blood types. So, nowadays, knowing ...

If you've ever searched the internet for the rarest blood type, you may have come up with more questions than answers. The short answer: AB negative is the rarest of the eight main blood types.

Amanda Hansen leaves her home near Phoenix to catch a flight to Austin. On Monday mornings she checks into Dell Children's Medical Center to participate in a clinical trial to try to save her ...

But if you don't have the protein, you're RH negative. You don't necessarily have to have the same blood type as your baby since the baby will inherit characteristics from both parents.

People with Type O are valued as universal donors who can give blood to anybody, while those with a negative RH are especially valuable because they are uncommon. People with B-negative blood type ...

These ABO blood types are further classified as Rh positive or Rh negative. Rh, formerly known as Rhesus, is another protein that is found on the surface of red blood cells. People who have this Rh ...