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. 2001 Oct;69(10):6038–6043. doi: 10.1128/IAI.69.10.6038-6043.2001

FIG. 3.

FIG. 3

Internalization of B. pertussis into MH-S cell monolayers. MH-S cell monolayers were infected with the indicated B. pertussis strains at a multiplicity of infection of 20. After 1 h of incubation, the monolayers were treated with gentamicin and lysed, and the bacteria were plated onto BG agar. The results are expressed as percentages of internalized bacteria relative to the number of bacteria present in the inoculum. The data represent averages and standard deviations for triplicate experiments. ∗, P < 0.05.