Figure 1.
The proportion of individuals surviving following a challenge when they had been previously primed with either a homologous or heterologous bacteria. Homologous: filled circles, Bt1–Bt1, Bs–Bs, Ec–Ec, Bt2–Bt2. Heterologous: open circles, Bt2–Bt1, Bt1–Bt2; Bt2–Bs, Bs–Bt2, Bt1–Bs, Bs–Bt1; Ec–Bt2, Bt2–Ec, Bt1–Ec, Ec–Bt1, Bs–Ec, Ec–Bs; Rin–Ec, Rin–Bt1, Rin–Bt2, Rin–Bs; naive–Bt1, naive–Ec, naive–Bs, naive–Bt2. Controls: filled diamonds, naive–naive, Rin–Rin, naive–Rin. Bt, B. thuringiensis; Bs, B. subtilis; Ec, E. coli; Rin, Ringer.