Normal human sera contain heterophile hemagglutinins to rabbit erythrocytes which are different from anti-B isoantibody and other heterophile antibodies such as Hanganutziu-Deicher antibody or Paul-Bunnell antibody. The antigen to this antibody was purified from rabbit erythrocyte stroma, and identified as pentaglycosyl ceramide, Gal (α1-3) Gal(β1-4) GlcNAc (β1-3) Gal (β1-4) Glc-Cer.
