Blood group antigens Blood group antigens blood group human blood group A2, a variant of type A Blood group antigens blood group es gibt aber seltenere blood group es gibt aber seltenere there are LOTS of really rare types. Blood group antigens “rare” blood type Blood group antigens Blood group antigens English Wikipedia blood group English Blood group antigens 30 human blood type systems Blood group antigens blood group 30 human blood type systems en.wikipedia.org/wiki/… A2, a variant of type A blood group Blood group antigens English Blood group antigens A2, a variant of type A blood group Blood group antigens blood types en.wikipedia.org/wiki/… English English Blood group antigens Wikipedia blood group minor blood group antigens