% N-glycans common in human IgM's. 
%  IgM's generally have 5 N-glyco sites and the glycans often have only one sialylated antenna.
HexNAc(1)
HexNAc(2)
HexNAc(2)Hex(5)
HexNAc(2)Hex(6)
HexNAc(2)Hex(7)
HexNAc(2)Hex(8)
HexNAc(2)Hex(9)
HexNAc(4)Hex(5)
HexNAc(4)Hex(5)Fuc(1)
HexNAc(4)Hex(5)Fuc(1)NeuAc(1)
HexNAc(4)Hex(5)Fuc(1)NeuAc(2)
% Bisecting GlcNAc is common in IgM glycans
HexNAc(5)Hex(5)Fuc(1)
HexNAc(5)Hex(5)Fuc(1)
HexNAc(5)Hex(5)Fuc(1)NeuAc(1)
HexNAc(5)Hex(5)Fuc(1)NeuAc(2)
