This rare blood type is found in approximately 1 in 10,000 individuals in India and only 1 in a million worldwide. The absence of the H antigen, even in O negative blood, makes finding compatible ...

What makes your blood different from someone else’s is your unique combination of protein molecules, called antigens and antibodies. Antigens live on the surface of your red blood cells.

The findings showed that H. sapiens, shortly after migrating ... People can be Rh-positive (they have a "D" antigen on their red blood cells) or Rh-negative (no D antigen). However, there are ...