Figure 5. Human iGb3S Appears to Be Inactive because of Multiple Mutations.

Galα(1,3)Gal expression of the reverse human to rat single (P₁₈₇L, N₂₅₂Y) or combined point mutations (P₁₈₇L+N₂₅₂Y). Background staining with secondary antibody alone is shown by the dotted histograms in each panel. The data are representative of three experiments.