Figure 1From: Protist predation can select for bacteria with lowered susceptibility to infection by lytic phagesPhage effect (mean ± SE) comparisons between bacteria with different co-evolutionary histories. The smaller the phage effect value, the less susceptible bacteria are to phage infection. A. Infection with ancestral phage. B. Infection with co-evolved phage. Data from the Serratia system.Back to article page