what type of blood antigens are expressed if a person is blood type ab negative?
Blood type AB Rh+. Antigens (on the surface of the red blood cells): AB indicates there are both A and B antigens. Rh+ indicates there are Rh antigens. Antibodies (in the blood plasma): No antibodies! (If all possible antigens are present, A, B and Rh antigens, there are no antibodies in the blood plasma.)