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Purification of His-tagged MSP1b fusion proteins. MSP1bF2 (lane 1), MSP1bF3 (lanes 2 and 3), and MSP1bF4 (lane 4) were electrophoresed on SDS-containing polyacrylamide gels and detected using silver staining (27). Lanes 2 and 3 represent different batches of purified MSP1bF3. Positions of molecular size markers are indicated in the right margin.
