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Endophytic population change of S. Typhimurium (gray bars) and S. Senftenberg (black bars) in leaves of lettuce (A) and basil (B) plants over time after passive apoplast inoculation. Bars represent the means of the log10-transformed population sizes for three replicate leaves sampled from three replicate pots, and SEM. *, Significant difference in population sizes between the two serovars (Student t test, P < 0.05).
