Table 4.

Percent human macrophage (U937) viability over 24 h based on MOI

Infectious agentViabilitya
0 hb8 h24 h
1c10100110100110100
Serovar Typhimurium LT284.9 ± 0.7484.4 ± 0.9680.7 ± 1.0587.7 ± 0.6775.8 ± 2.2067.6 ± 1.9482.0 ± 1.4166.8 ± 3.2242.6 ± 4.32
Serovar Typhi Ty286.6 ± 0.8386.1 ± 0.7385.2 ± 0.7988.6 ± 0.6887.2 ± 0.6385.8 ± 1.0384.7 ± 0.9482.8 ± 4.4979.2 ± 1.47
Serovar Enteritidis 48-8687.8 ± 0.7985.9 ± 1.1078.3 ± 1.1587.7 ± 0.9477.6 ± 2.4172.8 ± 2.7477.7 ± 2.3164.6 ± 3.7744.8 ± 2.70
None86.8 ± 0.9288.3 ± 0.9488.0 ± 1.33
  • a Mean percentage of viable, trypan-negative, eukaryotic cells ± standard deviation based on at least three separate experiments done in triplicate.

  • b Time after infection with the salmonellae.

  • c MOI.