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

It’s all got to do with the Rh factor on your blood cells. Rh factor, or the Rhesus factor, is an antigen. You may or may not have this factor in your blood. When present, it is found on the ...

There are four major blood groups which are determined by the presence or absence of two antigens, A and B, on the surface of red blood cells. There is also a protein called the Rh factor ...