TABLE 3.

Comparison of the serum bactericidal activity titers induced by NadA3 and NadA4 against homologous and heterologous strains

AntigenAdjuvantSerum bactericidal activity titer
Strain 2996 (allele 3)Strain 65/96 (allele 4)
NadA3Freund's32,768<16
Alum16,384256
NadA4Freund's324,096
Alum1282,048