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GMTs, percent accuracy, and percent acceptability of HI assays obtained with each erythrocyte species, compared to MN assay titers
Human erythrocytes without antibody (*) and with Ab (†) were identified by testing for pre-existing antibody against the pH1N1 virus in human subjects whose erythrocytes were obtained for the HI assay.
Abbreviations: GMT, geometric mean titer; HI, hemagglutination inhibition; MN, microneutralization.
