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It was named Rhnull 43 people have had it, but currently there are only nine active donors, making it the world's most precious blood type (hence the name golden) · The Golden Blood type or Rhnull Blood Group contains no Rh antigens (proteins) on the Red Blood Cells (RBC) This is the rarest blood group in the world Less than 50 people have this blood Group This Blood Group was firstly discovered in 1961 name Rhnull for the fact that is actually missingThe four major blood groups are determined by the presence or absence of two antigens on the surface of red blood cells A and B The four groups are A, B, O, and AB Furthermore, there is a protein called the Rh factor, which can be present or absent, determining whether the blood is positive () or negative () Knowledge Rh Null Blood Group Is Golden Blood Group Rarest Blood Group In The World Rh null blood group in india price