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SDS-PAGE analysis of the purified recombinant proteins corresponding to the different VIR subfamilies. Bacterial recombinant VIR proteins were expressed and purified as described in the Methods section. Lanes, 1: Molecular mass marker; 2: GST; 3: VIR-A4; 4: VIR-B10; 5: VIR-C1; 6: VIR-C2; 7: VIR-C16; 8: VIR-E5; 9: VIR-E8.
