rh factor blood group system. rh positive on rh negative. rhesus d antigen on the surface of red blood cells.

rh factor rhesus antigen red blood cell group system positive negative surface transfusion donation importance incompatibility compatibility pregnancy person fetus mother child father inheritance immune antibodies sensitization injection globulin risk prenatal complications hemolytic disease pregnant anemia health medical science infographic hematology plasma human laboratory antibody classification education match vector