Additional file 8.

Interactions between chemically coupled, but physically separated population. Kymographs are shown for two type-3 devices. The fluorescence intensities of the top and bottom habitat are superimposed: cells in the top habitat are shown in red and cells in the bottom habitat in green. Note that both habitats are inoculated from the same (JEK1036, green) culture, and that the bacteria in the upper and lower habitats are spatially confined to their own habitat.

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van Vliet et al. BMC Microbiology 2014 14:116   doi:10.1186/1471-2180-14-116