It is designated as Rh-null by scientists. Blood consists of various molecules, including proteins or blood group antigens.

An Rh null person has to rely on the cooperation ... only 9 of them are active donors for this blood group. This is what makes the blood type rare and also precious, another reason why it is ...

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 ...

People with blood group A can safely get group A blood ... The most rare type of blood is Rh-null. Less than 50 people in the world have this blood type, which is also called golden blood.