Fig. 2.

Effect of S. Typhimurium infection on weight loss in young and old mice. Percentage weight loss in streptomycin-pretreated young and old mice infected with 3.4×10⁸ or 1×10⁶ c.f.u. S. Typhimurium at days 1, 2, and 4 p.i. (n=11 per group; data from three independent experiments). Blank circle, old mice infected with the low dose; blank triangle, young mice infected with the low dose; solid circle, old mice infected with the high dose; solid triangle, young mice infected with the high dose; grey circle, old uninfected mice; grey triangle, young uninfected mice; * indicates significantly greater percentage weight loss than infected young mice of the same dose group at P<0.05.