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—Time-measured phylogeny of a dated subset of 41 intact Nf1 prophage sequences. The most likely root of phylogeny is marked by an X. Tip labels show in the following order: serogroup for meningococcus (NMB and NMC) or gonococcus (NG), strain name, MLST sequence type (ST), clonal complex, filamentous phage copy (1–4), and year of isolation. NG serotypes A and B are based on porB subtypes porB1A and porB1B (Tam et al. 1982).
