THE importance of the Rh factor is now well appreciated by both the physician and the layman. Understanding of the basic concept of isoimmunization by blood transfusion or by pregnancy requires only ...

When it comes to blood types, you may know A, AB, B, and O—but those larger groups actually contain millions of different varieties. That's because the surface of our blood cells are coated with ...

'Rh-Null' blood type is the rarest blood type with only 43 people in the world who have it. Also called 'golden blood', it is extremely valued since there are only 8 available donors for transfusion.