Survival after lethal inhalational <i>F. tularensis</i> LVS challenge.

<p>Two weeks after the completion of the immunization schedule (see Materials and Methods), 10 mice in each vaccine group were challenged <i>i.n.</i> with 10⁴ CFU LVS (equivalent to 10 LD₅₀) and monitored for survival for 28 days. squares, DNA-PolyEP immunization; circles, pCI immunization; triangles, non-immunized mice.