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Western blot analysis of selected OM proteins expressed by M. catarrhalis strain O35E and isogenic mha mutants. OM vesicles were obtained from the WT isolate O35E (lane 1) and from its mhaC (lane 2), mhaB1 (lane 3), mhaB2 (lane 4), and mhaB1 mhaB2 (lane 5) mutant strains and analyzed by immunoblotting with the indicated antibodies (Ab). Molecular mass markers are shown to the left in kilodaltons.
