It is world's most rare blood type, known as the golden or Rh-null blood type. Rh antigens in the red blood cells is what ...

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 ...

Rh-positive Child). Owen's 21 studies of chickens indicated that neonatal exposure to antigen caused a change in the character of the antibody that was produced on subsequent exposure to the antigen.

Additionally, there is a protein called "the Rh factor," which can also be present ... There are over 600 other known antigens, and the absence or presence of them creates "rare blood types ...