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Deposition of C3b, iC3b, and MAC on cells of serogroup B meningococcal strain H44/76, its unencapsulated variant v24, and the LPS(−) mutant pLAK33 after 30 min of incubation with a serum with high bactericidal activity (serum A), a serum with no bactericidal activity (serum B), and one a-γ-globulinemic serum (means ± SD of at least three experiments). Values are ODs measured in whole-cell ELISAs with coated opsonized bacteria. ODs at time zero have been subtracted.
