What distinguishes a type a red blood cell from a type o red blood cell

Another marker, Rh factor, is also used to type blood because it, too, is found on human red blood cells and causes antigen/antibody reactions. ... A person with O-negative blood has no antigens to be recognized as self. Therefore, anti-A and anti-B and anti-Rh antibodies will be produced.

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

the answer is shoe size