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Western blotting of human sera versus NTHI strain 1128 whole OMP preparation (in all lanes). Lanes 1 to 5, sera from children with S. pneumoniae culture-positive OM; lanes 6 to 10, sera from children with NTHI culture-positive OM. Arrows indicate recognition (from top to bottom) at approximately 42, 37, and 25 kDa, respectively.
