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Comparison of titers from nonimmunized human adults (samples 28, 31, 33, 35, 37, and 40) and immunized human adults (samples 29, 30, 32, 34, 36, 38, 39, and 41) obtained for strain 5/99 in the conventional assay and the HT-SBA after 7 or 8 h of growth following the bactericidal reaction.
