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Colonization of leafhoppers by wild-type and rpfF mutant strains. X. fastidiosa was recovered by maceration and culturing of one set of insects directly after removal from infected plants (gray columns). For a second set of insects in the same experiment, X. fastidiosa was recovered 7 days after removal from infected plants (filled columns). Columns with the same letter are not statistically different (see Materials and Methods).
