Figure 6

Loss of short R-type endotoxin with SPE extraction procedures (If oligosaccharide was shorter than Rc mutant). CE conditions: Separation buffer: Na2B4O7 (50 mM), pH 9.30; Bare fused silica capillary, (I.D. 50 µm); Total length: 39 cm (effective length: 29.0 cm); Voltage: 30 kV; Sample storage: 25 °C; Sample injection time: 5 s.