19.4
[1]. R A Childs, et al. Calf heart lectin reacts with blood group Ii antigens and other precursor chains of the major blood group antigens. FEBS Lett. 1979 Mar 1;99(1):17-9.
P261-P264-P270-P271-P20-P302+P32-P304+P340-P30+P31+P33-P330-P362+P364-P403+P233-P40-P01