Confocal laser scanning microscopy analysis of X. citri and hrpB
strains grown statically. GFP-expressing X. citri and hrpB
− strains cultured statically in vitro were analyzed by confocal laser scanning microscopy, serial images were taken at 0.5 μm distances (vertical z-stack). Z represents the ZX axis projected images. At the XY images, white arrows point to X. citri clusters of aggregated cells.