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Survival (A) and activity (B) profiles of rats inoculated intracisternally with various doses of L. monocytogenes. Data were compiled from three experiments; each dose group contained four or more animals. Symbols refer to doses of L. monocytogenes as follows: closed squares, 103 CFU; open triangles, 104 CFU; open circles, 105 CFU; open diamonds, 106 CFU.
