From: Effect of deletion of gene cluster involved in synthesis of Enterobacterial common antigen on virulence and immunogenicity of live attenuated Salmonella vaccine when delivering heterologous Streptococcus pneumoniae antigen PspA
Strain
Motility (cm) on soft agar
Death rate (%) (DOC)
LD50
χ3761
6.2 ± 0.1
9.5
2 × 104
χ12357
6.4 ± 0.1
87.6
> 109