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SDS-PAGE analysis of LOS isolated from N. meningitidis MA-1 and NMB. This figure illustrates the multiple glycoforms observed in NMB LOS due to variations in the oligosaccharide or PEA composition and the apparent homogeneity of MA-1 LOS. Lanes 1 and 2, N. meningitidis NMB LOS (2.0 and 0.2 μg, respectively); lanes 3 and 4, N. meningitidis MA-1 LOS (2.0 and 0.2 μg, respectively).
